Condec DLR3110 User manual

74843
DLR3110
Rack-mountable Pneumatic
Pressure Calibration Console
Technical Manual
• Operation
• Calibration
• Maintenance
• Service
CONDEC Sales Phone No.: [phone]
CONDEC Web Site: WWW.4CONDEC.COM

Copyright © 2002 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
December 2002
Contents
About This Manual................................................................................................................................... 1
1.0 Introduction.................................................................................................................................. 1
2.0 Installation and Wiring................................................................................................................ 3
2.1 Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Repacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Rear Panel Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4 Hardware Configuration and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Display/Keyboard Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6 Freeze Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.6.1 Freeze Mode Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7 Min and Max Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7.1 Resetting Min and Max Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8 Remote Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.0 Operation...................................................................................................................................... 8
3.1 Initial Setup Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Pressure Measurement Sequence (Gage) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Pressure Measurement Sequence (Absolute). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.0 Re-Calibration Only.................................................................................................................... 10
4.1 Pneumatic Calibration Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Instrument Calibration Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Re-Calibration Procedure (Zero, Linearity and Hysteresis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.0 Configuration and Calibration.................................................................................................... 12
5.1 Pneumatic Calibration Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Instrument Calibration Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.3 Mode Selection Switch (S1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.4 Main Set-Up Mode Menu Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.5 Auto Set-Up Configuration Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.5.1 Auto Set-Up Menu (General). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.5.2 Auto Set-Up Menu (Gage). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.5.3 Auto Set-Up Menu (Absolute) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.6 Calibration Set-Up Configuration Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.6.1 Calibration Mode Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.7 Modifying Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.8 Span Calibration Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.9 Resetting Span Calibration Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.10 Overwriting Span Calibration Points and Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.11 Configuration Set-Up Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.12 Conversion Set-Up Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.13 I/O Set-Up Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.13.1 Port 1 Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.13.2 Port 1 Printer Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.13.3 Port 1 Duplex Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.13.4 Port 1 RS485 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.13.5 Port 1 Simplex Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.13.6 Port 2 Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.13.7 Time and Date Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.13.8 Input Set-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.13.9 Print and Zero Wiring Configration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

ii DLR3110 Rack Mount Digital Pressure Indicator Manual
6.0 Serial Input/Output..................................................................................................................... 32
6.1 ASCII - Data Formats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.2 Printer (Port One or Port Two) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.3 Duplex (Port One Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.3.1 Full Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.3.2 Command Code <cmd> Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.3.3 Basic RS485 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Continuous Simplex Output (Compressed Format) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.5 Serial Output Wiring and Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.0 Maintenance and Service.......................................................................................................... 39
7.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.2 Maintenance and Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.2.1 Panel/Chassis Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.2.2 ORION-2C (PN 55283) or ORION-3A (PN 55287) Manifold Removal. . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.2.3 ORION Manifold - Valve Seat Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.2.4 ORION Manifold - Vernier Control Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.2.5 ORION Manifold - Vernier Control Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.2.6 ORION-2C Manifold - Valve Seat Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.2.7 ORION Manifold - Panel Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2.8 ORION-2C Manifold - Valve Adjustment Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.2.9 ORION-3A Manifold - Valve Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.2.10 Pressure Limit Control (Standard Pneumatic), Regulator Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.2.11 Pressure Limit Control (Standard Pneumatic), Regulator Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.2.12 Pressure Limit Control (Tescom), Regulator Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.2.13 Pressure Limit Control (Tescom), Regulator Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.2.14 Panel Gauge Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.2.15 Panel Gauge Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.2.16 Test Port Quick-Connect Fitting (PN 59762) Removal and Installation - 3 and 100 Full Scale PSI . . . . 48
7.2.17 Test Port Filter (PN 54188) Removal and Installation - 250 and 2500 Full Scale PSI . . . . . . . . . . . . . . 49
7.2.18 Test Port Quick-Connect Fitting (PN 59004) and Filter (PN 54188) Removal and Installation - 5000 and
10000 Full Scale PSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
7.2.19 Test Port (Output) Hose Quick-Connect Fitting and Filter Removal and Installation (PN 56991)- 5000 and
10000 Full Scale PSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
7.2.20 Input Port Filter (PN 54188) Removal and Installation - 2500 Full Scale PSI. . . . . . . . . . . . . . . . . . . . . 50
7.2.21 AC Fuse (PN 58076) - Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.2.22 Input Port Filter (PN 54188) Removal and Installation - 5000 and 10000 Full Scale PSI. . . . . . . . . . . . 51
7.2.23 AC Fuse (PN 58076) - Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.2.24 AC Power/EMI Line Filter (PN 58870) - Removal and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.2.25 Power Switch (PN 58878) - Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3 ORION-2C Valve Assembly Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.4 ORION-3A Valve Assembly Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.0 Model Numbering System......................................................................................................... 62
9.0 Auto Selection Default Tables ................................................................................................... 63
10.0 Conversion Factors.................................................................................................................... 66
11.0 Options, Replacement Kits ........................................................................................................ 67
12.0 Specifications............................................................................................................................ 68
DLR3110 Warranty and Return Policy.................................................................................................... 69
DLR3110 Return Material Authorization Form....................................................................................... 70

Introduction 1
About This Manual
This manual is intended for use by service technicians
responsible for installing and servicing the DLR3110
Digital Pressure Calibrator.
The DLR3110 series rack-mount combines the DLR
Digital Pressure Calibrator with the Orion vernier for
calibration of a wide variety of pressure sensing and
measuring devices.
The DLR3110 utilizes a repeatable sensor coupled to
microprocessor-based electronic circuitry and a
selectable units conversion display system to provide
digital representation of measured pressure. The unit
has one test port. Dependent on model, a front panel
mounted gauge tells the operator system pressure and
includes a pressure regulator so the operator can not
over-pressure a unit under test. Test hose is supplied
standard for the customer. Front panel buttons provide
selection of the desired functions, including zeroing
(GAGE models only).
Before attempting to use either style
pressure calibrator, the following
instructions must be read and
understood by personnel using the
equipment. This is a high-pressure system. Only
personnel formally trained in the use of pneumatic
pressure equipment should be permitted to operate it.
Potentially dangerous conditions can be produced
through negligent handling or operation of the console
due to the high pressure used within the unit.
These units are strictly for use with pneumatic pressures.
Erroneous readings and potential damage could result
from the introduction of hydraulic fluids into the internal
tubing lines.
Authorized distributors and their
employees can view or download this
manual from the Condec distributor site
at
www.4condec.com
.
1.0 Introduction
Using microprocessor technology, the rack-mountable DLR3110 instrument offers a combination of features,
performance, versatility and reliability not previously available in a single, rack-mount pressure calibration
instrument. Some of the features of the DLR3110 are listed below:
• Streamlined, multi-function keyboard.
• Selectable configurations, automatic set-up mode and multiple conversion units.
•Based on model, accuracy equal to or better than ±0.05%, ±0.1% or ±0.25% of indicated value from 20%
of full scale.
•Alpha-numeric display prompting provides the operator with functional status information during both
operation and calibration.
•Amanually adjustable regulator (when applicable) allows the maximum system input pressure to be
adjusted to any desired value higher (typically 20 – 50%) than the full scale range of the device being
tested. This regulator helps protect the unit under test from being inadvertently over-pressurized.
•No manual alignment or potentiometer adjustments are required for system calibration. (50,000
displayed graduations; ten-point linearity compensation; automatic gain adjustment).
•Calibration integrity: Tamper-proof design. Once calibrated, numerous safeguards guarantee the
integrity of pressure readings obtained.
•Operation: All controls, indicators and test port are accessible from the front panel. A version with test
port on rear of unit is available by special order. See Section 3.0 on page 8 for instructions on system
operation.
•For safe, clean operation, all pressure components are made of brass, copper, aluminum, or stainless steel
and proof-tested to at least 150% of maximum operating pressure. In addition, the system contains a
high-pressure burst disk and relief valves to protect both the operator and system components from harm
in the event of inadvertent over-pressurization.
The heart of this calibration system is a stable and repeatable pressure transducer. These sensors produce an
electrical output signal that is linearly proportional to the applied pressure.
Warning

2 DLR3110 Rack Mount Digital Pressure Calibrator Manual
By combining these sensors with microprocessor-based circuitry, an even higher degree of operational accuracy
and precision has been accomplished. For example, computer-generated correction curves for both the
non-linearity and the hysteresis of the sensors improve these characteristics by an order of magnitude or more.
Two micro-metering valves and vernier are provided to control the external nitrogen source while the digital
display indicates the magnitude of the applied test pressure. Also, a push-button switch provides the “zeroing” of
the pressure display (on GAGE models). Over-pressure protection, based on model, is provided via a fully
adjustable pressure regulator which is manually set for each new device being tested.
Figure 1-1 provides an overview of the DLR3110’s function.
Figure 1-1. DLR3110 Flow Diagram
MONITOR
PRESSURE LIMIT
RELIEF
VALVE
INPUT PORT
±50 PSI
3000 PSI
BURST DISK
CONTROL
PRESSURE LIMIT
FILTER
20u
MICROPROCESSOR-BASED
DIGITAL INDICATOR
TRANSDUCER
VENT
VENT/VACUUM
PORT
(QUICK DISCONNECT)
PRESSURE
INCREASE
VERNIER
TEST PORT20u
FILTER
ADJUST
DLR3110 FLOW DIAGRAM
NOT REQUIRED ON 5K OR 10K MODELS
NOTE: MAX INPUT BASED\P ON MODEL.

Installation and Wiring 3
2.0 Installation and Wiring
2.1 Unpacking and Inspection
Carefully remove the instrument from its shipping container. A visual inspection of the instrument's external
surfaces should be performed immediately after unpacking. If obvious damage occurred during transit, notify the
shipping agency and distributor as soon as possible to receive instructions on how to proceed after an assessment
of the damage is completed.
If the instrument shows no signs of damage, check to be sure all the required equipment and accessories were
included. Keep original shipping carton for repacking in case repair is necessary.
2.2 Repacking
If the DLR3110 must be returned for repair, recalibration, or modification, be sure that it is properly cushioned
and packed and that a description of the work to be performed is included. The original shipping carton should be
kept for this purpose.
2.3 Rear Panel Configuration
The rear panel of the rack mount DLR3110 Series, contains the following items:
• AC power cord (1) and input receptacle.
• 7/16-20, 37
°
-4 AN male fittings, vent/vacuum port (2) and input pressure port (3).
NOTE: The maximum input pressure, supplied by user, is noted below input pressure port.
• The unit's identification plate (4) and J6, 25 pin D connector, (5) for serial I/O communication interface.
•Optional if required items: Connector J5, 37 pin D connector, (6) for the Parallel BCD output. Connector
J2 (7) for the Freeze mode cable. Test port (8) in place of front mounted.
Figure 2-1. DLR3110 Rear View
PUMP
VACUUM
INPUT
MAX. XXX
REAR VIEW
4
PORT
VENT/VACUUM
J2
FREEZE MODE J3
J1
3
1
FUSE
AC INPUT
TEST PORT
J6
J5
2 5 6
78

4 DLR3110 Rack Mount Digital Pressure Calibrator Manual
2.4 Hardware Configuration and Wiring
The CPU board in the DLR series has been designed for easy access to wiring and configuration of all available
inputs and outputs. In addition to easy access, the wire and configuration mapping provide clear labeling of all
input and output signals and the associated configurations of their device drivers.
Figure 2-2. CPU Configuration
NOTE: Unit is shipped previously set up and configured. For information on changing hardware configuration see
Section 5.11 on page 21.
2.5 Display/Keyboard Functions
See Figure 2-3 on page 5 for information on display and keyboard functions.
• Six-digit LED display of the measured pressure (1).
•Three annuciators: Two of the LEDs are used for indicating whether the unit is operating as a GAGE
pressure unit or as an absolute (ABS) pressure unit. The LED marked
P
indicates that the unit is in the
delta P display mode (2).
•Eight character LED display for indicating the conversion units that the pressure data is currently being
displayed in. This display also scrolls prompting messages if corrective action is required or a problem
occurred in performing an operation (3).
For example, if attempting to perform a push to ZERO while the pressure data is in motion, the display
shows
Unit is in MOTION .
•In GAGE units, the
ZERO
function key (4) allows the indicator to be zeroed if it is within the limits
defined by the ZERO configuration.
•
DISPLAY
key (5). In the normal operating mode this key is used to select and view all active displays that
were enabled in the Configuration mode (i.e., Pressure data, MIN/MAX data, Freeze mode data, and
delta P display mode data).
THE PORT 1 INPUT SWITCH SELECTS FROM WHICH DEVICE THE SERIAL DATA IS RECEIVED
JUMPER POSITION JUMPER POSITION
PORT 1 CONFIGURED FOR 20ma
CURRENT LOOP
PORT 1 CONFIGURED FOR RS232 PORT 1 CONFIGURED FOR RS485 OR
RS422 (RECEIVER)
PORT 1 CONFIGURED FOR RS485 OR
RS422 (TRANSMITTER)
JUMPER POSITION
SHOWN CONFIGURED AS INPUTS SHOWN CONFIGURED AS OUTPUTS
TB1
P1 IN
GND
J2
TB2
S4
P1
F1
C1
C2
3
LO
10
HI
S8
S9
RS485
AB
20mA
TB3
1
S7
BA
S6
RS422
RS232
3
OUT
S5
IN
14
REMOTE SENSING
U18
C38
S10
OFF
1
S3
E12
E10 E11
7
S2
8
1
J3
RETURN
SIG COM
20mA LOOP
P2
+OUT
-OUT
-IN
P1
+OUT
-OUT
+IN
OUTOUT P2
RS232
P1
IN
OUT
I/O 1
I/O 2
+5V
-SIG
RS422
RS232
20mA
RS485
6
-SENSE
-EXC
+EXC
+SENSE
+SIG
1
RS232
RS422
S6
AB
S7
20mA
BA
RS485
S9
S8
P1 P1
S8
S9
RS485
AB
20mA
S7
BA
S6
RS422
RS232
IN
S5
OUT
S4
IN
S5
OUT
S4
TB1
S13
E8
-EXC +EXC
KKR8924-[]
ASSEMBLY
CPU
DATE []
REV []
PORT 1 SERIAL INPUT SELECTION
SERIAL INPUT/OUTPUT SELECTION
INPUT/OUTPUT CONFIGURATION
JUMPER POSITION

Installation and Wiring 5
•
TARE
function key (6). The AUTO TARE (Auto.tr) feature is enabled in the Configuration mode under
the ZERO SET selection. When AUTO TARE is enabled, pressing the
TARE
key automatically tares out
the value of the current pressure display reading and shifts the display to the P (delta P) mode. The
resultant ZERO reference reading is useful in cases where it is desirable to subtract the atmospheric
pressure from an absolute reading to obtain a quick gauge reference.
NOTE: This pseudo-gage reading is only valid for the current atmospheric pressure that was tared out. Any
subsequent changes in atmospheric pressure result in an error.
•
PRINT
key (7) issues a demand serial printout of the display data from the indicator.
•
UP
(8) and
DOWN
(9) arrow keys step through and display the data in the conversion units that were
selected in the Configuration mode.
Figure 2-3. Display/Keyboard Functions
2.6 Freeze Mode
Freeze mode, used for testing pressure switches, is an edge triggered input signal that freezes the last display
update for the number of seconds (1 – 10 seconds) selected in the Configuration mode. The Freeze mode is
enabled in the CONFIG ?
menu under freeze time selections (Refer to Section 5.11 on page 21 for enabling the
Freeze mode).
Figure 2-4. Freeze Mode CPU Connections
Either opening or closing of a switch contact between an active input (I/O 1 or I/O 2) and RETURN “freezes”
the
display (for the pre-selected amount of time in seconds) as shown above. However, while the display is in the
freeze condition, it does not respond to another contact transition
.
PSI
P Gage Abs
ZERO DISPLAY TARE PRINT YES NO
CE ENTER
2
3
1
8 9
7
6
54
TB2
S4
OUT
S5
IN
RETURN
I/O 1
I/O 2
(DIGITAL COMMON)
PRESSURE SWITCH
JUMPER PLUG SHOWN ON S5 CONFIGURED AS AN INPUT
(+5 VDC)

6 DLR3110 Rack Mount Digital Pressure Calibrator Manual
2.6.1 Freeze Mode Specifications
The following bullet points outline general specifications for the DLR3110’s Freeze mode.
•The freeze input “freezes”
the display for approximately five seconds on the rise and fall time of the
input (edge not level triggered) and can not be re-triggered.
• Input pulse > 100 ms required to guarantee detection.
•Freeze mode “freezes”
the 6 digit numeric and LED bar displays in whatever mode it is in (for example,
Normal, Net, Min and Max mode).
•Alphanumeric display prompts
FREEZE .
•During the “freeze”
the front panel keys are inactive.
• Inputs are a +5 VDC logic level. Sinking current approximately
0.5 mA.
2.7 Min and Max Mode
The Min and Max mode is designed to capture and store the highest and the lowest pressure readings. These
values may be recalled at anytime in the normal operating mode by repeatedly pressing the
DISPLAY
key until
the desired value is displayed. When either the minimum or maximum value is selected, the alphanumeric
display flashes between the mode (Min and Max) and its units.
NOTE: The Min and Max mode pressure data is automatically converted to any of the active conversion units by
stepping through the conversion units using the UP or DOWN arrow keys.
Both the Min and Max mode are independent of each other and are enabled (turned ON) in the Configuration
mode (see Section 5.11 on page 21).
2.7.1 Resetting Min and Max Values
To reset the stored minimum or maximum value:
1. Select the Min or Max display to be reset using the
DISPLAY
key.
2. Press the
CE
key. One of the following messages appears on the alphanumeric
display:
RESET MAX?
YES OR NO; RESET MIN? YES OR NO.
3. At the display prompt shown above, press the
YES
key to reset the value or press the
NO
key to abort
resetting the value.
NOTE: Min and Max data work with the standard pressure, not delta pressure data.
2.8 Remote Display Mode
The following describes the setup for connecting the optional six-digit remote display (PN 74683). The display
duplicates the DLR3110 six-digit front panel display for all ranges and units selected (see Figure 2-5 on page 7).
NOTE: Remote display does not show current unit or mode designation.
See Table 5-10 on page 24 for setting the following parameters:
Parameter Configuration
Port 1 SIMPLEX
Baud 9600
Parity EVEN
Port 1 Modify
delay 1 AUTO
t –d 1 OFF
data 1 COMPRESS
EOL 1 CR
SOt 1 NONE
EOt 1 NONE
Table 2-1. DLR3110 Parameters

Installation and Wiring 7
Figure 2-5. DLR3110 CPU to Remote Display PN 74683 Wiring
P1
TB3
1
S7
BA
S6
RS422
RS232
SIG COM
OUT
P2
RS232
P1
IN
OUT
JUMPER PLUGS SHOWN ON S6 & S7 CONFIGURED AS RS232
P2-4
P2-5
REMOTE DISPLAY
J6
7
2
WIRE\PCOLOR
BLACK
RED
ISO GND
RS232 RXD

8 DLR3110 Rack Mount Digital Pressure Calibrator Manual
3.0 Operation
The following sections provide instructions on various operation procedures for the DLR3110.
3.1 Initial Setup Procedure
To prepare for actual calibration usage, see Figure 3-1 on page 9 and proceed as follows:
1. Check that the INPUT valve (1) is closed (rotate clockwise until it stops) and that the VENT valve (2) is
open (two turns counter-clockwise from its stop).
2. Plug in the power cord (see Section 2.3 on page 3) and power up the unit by pressing the power switch
(3). Allow at least 10 minutes warm-up time.
3. If applicable, use the PRESSURE LIMIT CONTROL REGULATOR (4) to adjust the maximum system
input pressure, as read by the PRESSURE LIMIT MONITOR (5), to any desired value higher (typically
20–50% higher) than the full-scale range of the Device-Under-Test (DUT). This procedure fully protects
the DUT from being accidentally over-pressurized.
4. Connect the male end of the test hose to the TEST PORT (6) fitting.
NOTE: DLR3110 may be ordered with Test port on rear of unit. See Section 2.3 on page 3.
5. Connect the swivel fitting end (7/16-20) of the test (output) hose to the DUT using adapters if required.
Tighten all connections properly.
3.2 Pressure Measurement Sequence (Gage)
Use the following steps to measure pressure with the GAGE model DLR3110:
1. With reference to Figure 3-1 on page 9, check that the indicator on the right end of the display indicates
Gage
(8). If not, see Section 5.11 on page 21.
2. Press and release the
ZERO
switch (7). DLR3110’s LEDs momentarily display the word
Zero
and then
the display returns to a
0
reading. The instrument may be zeroed at anytime, as long as the VENT valve
(2) is open, by momentarily depressing the
ZERO
switch (7) for less than 5 seconds.
3. To apply pressure, close the VENT valve (2) approximately two turns clockwise until it stops, then open
the INPUT valve (1) approximately 1/2 turn counter-clockwise until the numerical display begins to
move. The pressure may change rapidly until reaching approximately 90% of the desired final value.
4. Use either the INPUT (1) or VENT valve (2) to obtain a specific pressure reading. Both provide precise
control. As the pressure approaches the desired value, the valve being used for control should be rotated
slowly clockwise to its closed position. With a little experience, pressure values very close to the desired
final value can be quickly achieved.
5. To obtain exact pressure readings, slowly rotate the VERNIER control knob (10) in the direction
required (clockwise to increase pressure) as indicated by the electronic numerical display.
3.3 Pressure Measurement Sequence (Absolute)
Use the following steps to measure pressure with the ABSOLUTE model DLR3110:
1. With reference to Figure 3-1 on page 9, check that the indicator on the right end of the display indicates
Abs
(9). If not, see Section 5.11 on page 21.
2. If only pressure measurements greater than barometric are required, continue to step 2.1. If pressure
measurements above and below atmospheric pressure are required go to step 3.
a) To apply pressure, close the VENT valve (2) by turning clockwise approximately two times until it
stops and open the INPUT valve (1) by turning counter-clockwise approximately 1/2 turn until the
numerical display begins to move. In general, the pressure may be changed rapidly until reaching
approximately 90% of the desired final value.
b) Use either the INPUT (1) or VENT valve (2) to obtain a specific pressure reading. Both provide
precise control. As the pressure approaches the desired value, the valve being used for control should
be rotated slowly clockwise to its closed position. With a little experience, pressure values very close
to the desired final value may be quickly achieved.
c) To obtain exact pressure readings, slowly rotate the VERNIER control knob (10) in the direction
required (clockwise to increase pressure) as indicated by the electronic numerical display.

Operation 9
3. If pressure measurements above and below atmospheric pressure are required, connect a VACUUM
PUMP to the VACUUM/VENT port (2) as shown in Figure 2-1 on page 3.
4. Open the VENT valve (2), close the INPUT valve (1) and apply power to the vacuum pump and allow it
to evacuate the system for several minutes or until the digital display reading reaches equilibrium near
0 PSIA.
5. With the vacuum pump still running, close the VENT valve (2) and check for system leaks. If there are
none, continue to step 5.1.
a) To apply pressure, close the VENT valve (2) by turning clockwise approximately two turns to its
stop and open the INPUT valve (1) by turning counter-clockwise approximately 1/2 turn until the
numerical display begins to move. In general, the pressure may be changed rapidly until reaching
approximately 90% of it desired final value.
b) Use either the INPUT (1) or VENT valve (2) to obtain a specific pressure reading. Both provide
precise control. As the pressure approaches the desired value, the valve being used for control should
be rotated slowly clockwise to its closed position. With a little experience, pressure values very close
to the desired final value may be quickly achieved.
c) To obtain exact pressure readings, slowly rotate the VERNIER control (10) knob in the direction
required (clockwise to increase pressure) as indicated by the electronic numerical display.
Figure 3-1. Pressure Measurement Sequence
DUT
TARE
ZERO DISPLAY
YES
ENTER
PRINT
CE
PSI
NO
P Gage Abs
VENT
TEST PORT
MONITOR
PRESSURE LIMIT
VERNIER
CONTROL
INPUT
POWER
DECREASE
INCREASE
789
456
123 10

10 DLR3110 Rack Mount Digital Pressure Calibrator Manual
4.0 Re-Calibration Only
NOTE: This section is for the technician that is familiar with the front keyboard menus and is doing nothing more than a
re-calibration. The re-calibration must be done in the same base units as originally calibrated. For a more in-depth
configuration and calibration explanation, see Section 5.0 on page 12.
The step-by-step calibration sequence provided on the following pages permits a qualified technician to calibrate
an entire DLR3110 instrument in approximately 45 minutes.
The instrument has been designed and programmed to provide the operator with various prompting symbols and
legends during each phase of the calibration sequence. Also, to prevent unauthorized tampering or calibrations,
numerous features have been incorporated to minimize this potential danger.
However, it must be emphasized that when performing these tests, the computer within the DLR3110 is actually
being re-programmed and as such, it is imperative that the pressure standard being used is in satisfactory
operating condition and that the technician fully understands its operating characteristics and methods of usage.
In addition, the DLR3110 itself must be warmed up for approximately 30 minutes and electrically stabilized
prior to performing a calibration cycle.
4.1 Pneumatic Calibration Set-Up
Figure 4-1 on page 11 defines a typical calibration set-up using a floating piston type dead weight tester.
However, any type of precision standard is acceptable as long as its basic accuracy is twice that of the
DLR3110’s or better.
To permit proper calibration at least an on/off and a vent valve must be provided (connected as shown in
Figure 4-1 on page 11).
4.2 Instrument Calibration Set-Up
Check that the INPUT valve (1) is closed (rotate clockwise until it stops) and that the VENT valve (2) is open
(two turns counter-clockwise from its stop).
The DLR3110 is placed into its Calibrate mode by closing rocker switch S1 position 2. In the Calibrate mode,
the DLR3110's LED and alpha-numeric display is used to provide operator prompting symbols as well as
displaying the various data formats employed.
4.3 Re-Calibration Procedure (Zero, Linearity and Hysteresis)
Use the following steps for the re-calibration procedure of the DLR3110.
1. The alpha-numeric display reads FILTER X, where “X” represents a numerical variable.
2. Press the DOWN arrow key on the display panel. The alpha-numeric display reads CAPACITY.
3. Press the DOWN arrow key on the display panel. The display reads XXXX x .x.
4. Press the DOWN arrow key on the display panel. The LED display reads base.
5. Press the DOWN arrow key on the display panel. The alpha-numeric display reads GAGE for GAGE
models and ABS for ABSOLUTE models. For GAGE models continue to step 6. For ABSOLUTE
models go to step 7.
6. Press the DOWN arrow key on the display panel. The alpha-numeric display reads ZERO CAL. Verify the
INPUT valve is closed (rotate clockwise until it stops) and that the VENT valve is open (two turns
counter-clockwise from its stop).
Press the ENTER key on the display panel. The LED display reads 0.00 (number of zeros arbitrary).
Close the VENT valve (rotate clockwise until it stops). Go to step 7.
7. The alpha-numeric display reads SPAN 1 CAL TARGET=XXX, where “X” represents a numerical variable.
Set the input pressure from the test standard to the target value on the display. Wait for system to stabilize
and press the ENTER key on the display panel.
8. The alpha-numeric display reads SPAN 2 CAL TARGET=XXX, where “X” represents a numerical variable.
Set the input pressure from the test standard to the target value on the display. Wait for system to stabilize
and press the ENTER key on the display panel. Repeat this step for the next eight predetermined SPAN
target values.

Re-Calibration Only 11
9. The alpha-numeric display reads HYST. CAL TARGET=XXX (X represents the preset target value on
display). Set the input pressure from the test standard to the target value on the display. Wait for system
to stabilize and press the ENTER key on the display panel.
NOTE: For ABS models, use a vacuum pump to reach the applicable SPAN or HYST target values that are
below local barometric pressure.
10. The alpha-numeric display reads FILTER 5. Save the calibration data by opening rocker switch S1
position 2. DLR3110 returns to normal mode.
11. Vent system and remove test standard.
Figure 4-1. Instrument Calibration Set-Up
NOTE: AC input and input port are on back side rack-mountable calibrator.
VENT
PNEUMATIC PRESSURE
TESTER
"ON-OFF"
2-WAY VALVE
TARE
ZERO DISPLAY YES
ENTER
PRINT
CE
PSI
NO
P Gage Abs
VENT
TEST PORT
MONITOR
PRESSURE LIMIT
VERNIER
CONTROL
INPUT
POWER
DECREASE
INCREASE
789
456
12
310

12 DLR3110 Rack Mount Digital Pressure Calibrator Manual
5.0 Configuration and Calibration
The following sections cover configuration and calibration of the DLR3110. For information on calibrating the unit
without configuration changes, see Section 4.0 on page 10.
During the following procedures, the computer within the DLR3110 is actually being re-programmed. The pressure
standard being used during calibration should be in satisfactory condition and fully understood by the service
technician. In addition, the DLR3110 must be warmed up for approximately 30 minutes and electrically stabilized
prior to performing a calibration cycle.
5.1 Pneumatic Calibration Set-Up
Figure 5-1 defines a typical calibration set-up using a floating piston type dead weight tester. Any precision
standard is acceptable to use providing its basic accuracy is at least twice that of the DLR3110’s.
5.2 Instrument Calibration Set-Up
Check that the INPUT valve (1) is closed (rotate clockwise until it stops) and that the VENT valve (2) is open
(two turns counter-clockwise from its stop).
Figure 5-1. Instrument Calibration Set-up
NOTE: AC input and input port are on the back side of rack-mountable calibrator.
5.3 Mode Selection Switch (S1)
•Main set-up mode - Allows access to the Configuration and Calibration modes.
•Calibration mode - Accesses the Calibration mode directly.
•I/O mode -Allows direct access to the set up of the Serial I/O ports (ports 1 and 2), BCD,Analog output,
discrete inputs/outputs.
•Diagnostic mode - Accesses a diagnostic mode for troubleshooting and evaluation (factory access only).
VENT
PNEUMATIC PRESSURE
TESTER
"ON-OFF"
2-WAY VALVE
TARE
ZERO DISPLAY YES
ENTER
PRINT
CE
PSI
NO
P Gage Abs
VENT
TEST PORT
MONITOR
PRESSURE LIMIT
VERNIER
CONTROL
INPUT
POWER
DECREASE
INCREASE
789456
12
310

Configuration and Calibration 13
Figure 5-2. Rocker Switch S1 Location
5.4 Main Set-Up Mode Menu Selections
Enter the main setup mode by closing switch 1of S1 located on the main board (see Section 5.3 on page 12). All
other switch positions on S1 must be open. To save the changes and leave MAIN set-up, open switch 1of S1.
Press YES key to accept selections, NO key to reject.
Mode
Switch Position
1234
Normal Closed Open Open Open
Main set-up Open Closed Open Open
Calibration Open Open Closed Open
Diagnostic Open Open Open Closed
Table 5-1. Mode Selection Switch Modes
LED Display Alpha-Numeric Display Key Pressed Remarks
SET AUTO ? YES key See Section 5.5 on page 14
NO key Continue to CONFIG?
SET-UP CONFIG ? YES key See Section 5.11 on page 21
NO key Continue to CAL?
---- CAL ? YES key See Section 5.6.1 on page 17
NO key Continue to I/O?
SET-UP I/O ? YES key See Table 5-10 on page 24
NO key Continue to CONV?
SET-UP CONV. ? YES key See Section 5.12 on page 22
NO key Return to AUTO?
Table 5-2. Main Set-Up Mode Selection Parameters
C4 +
C14
J5
1
U1
EXPANDER
10
C8
CR7
C6
R2
1
R3
+
11
C5
C7 C10
C22
+
1
R4 U2
+
E15
U14
C31
R20
C20 U8
20
J1
KEYBD
U20
C35
C18
U6
U7
U5
C37
C17
MAIN
CAL
I/O
DIAG
RP1
DISP
R7
5
10
S1
6
MODE
J4
1
R6
1
MODE
S1
DIAG
I/O
CAL
MAIN
OPEN
12 43
FRONT OF DLR3110

14 DLR3110 Rack Mount Digital Pressure Calibrator Manual
Figure 5-3. Auto Set-Up Mode
5.5 Auto Set-Up Configuration Mode Selection
The auto set-up automatically sets the following conditions in the DLR3110:
•SET-UP - CONFIG configuration parameters
•SET-UP - CONV conversion parameters
•SET-UP - I/O configuration of inputs/outputs
•---- CAL sets capacity, count by, abs/gage, and cal units; resets all calibration values; sets all cal target
values for span and hysteresis.
5.5.1 Auto Set-Up Menu (General)
* Press YES key to accept selection; NO key to reject.
Upon completion and accepting an AUTO set-up configuration, the program automatically advances the
indicator to the calibration mode (see Section 5.6.1 on page 17).
LED Display Alpha-Numeric Display Key Pressed* Remarks
SET AUTO ? YES key See Section 5.4 on page 13
---- GAGE ? YES key See Section 5.5.2 on page 15
NO key Continue to ---/ABS?
---- ABS ? YES key See Section 5.5.3 on page 16
NO key Continue to ---/SPECIAL?
---- SPECIAL. ? NO key Allocated for future use, continue to
----/CUSTOM ?
---- CUSTOM ? NO key Allocated for future use, continue to
----/EXIT ?
---- EXIT ? YES key Return to main set-up mode selections
(see Section 5.4 on page 13).
NO key Returns to ----/GAGE ?
Table 5-3. Auto Set-Up Mode Selection Parameters
AUTO ?
ZERO DISPLAY TARE PRINT YES
NO
CE ENTER

Configuration and Calibration 15
5.5.2 Auto Set-Up Menu (Gage)
See Section 9.0 on page 63 for a complete listing of the default settings for all gage and absolute selections under
the AUTO set-up mode.
NOTE: If you continue to press NO key past highest full scale range, DLR3110 will go to exit menu. Hit YES key at exit
menu (see Table 5-3 on page 14).
LED Display Alpha-Numeric Display Key Pressed Remarks
SET AUTO ? YES key See Section 5.5 on page 14
---- GAGE ? YES key See Section 5.5 on page 14
SET-UP 3 PSIG ? NO key Continue to press NO key until the
alpha-numeric display shows the
DLR3110’s full scale range.
YES key Press YES key when the alpha-numeric
display shows the DLR3110’s full scale
range.
SET-UP ACCEPT ?
YES or NO. NO key Continue to press NO key until the alpha-numeric display shows the
DLR3110’s full scale range. See note
below.
YES key Accept data
XXXX CAPACITY YES key “XXX” shown on LED display represents
the full scale range and is based on
previous selection.
— EXIT ? YES key Return to SET-UP/ I/O?. (see Section 5.4
on page 13).
NO key Returns to XXX/CAPACITY
Table 5-4. Auto Set-Up Mode (Gage) Parameters Selections

16 DLR3110 Rack Mount Digital Pressure Calibrator Manual
5.5.3 Auto Set-Up Menu (Absolute)
See Section 9.0 on page 63 for a complete listing of the default settings for all gage and absolute selections under
the AUTO set-up mode.
NOTE: If you continue to press NO key past highest full scale range, DLR3110 will go to exit menu. Hit YES key at exit
menu (see Table 5-3 on page 14).
5.6 Calibration Set-Up Configuration Mode Selection
Use one of the following methods for configuring the calibration set-up mode:
Method 1
CAL (SELECT). See Section 5.4 on page 13 for information on selecting main mode settings.
Method 2
CAL (DIRECT). Closing only rocker switch position 2on switch S1 places the DLR3110 directly into
CALIBRATION mode. See Section 5.3 on page 12.
NOTE: If the AUTO SET-UP selection is accepted and completed, the indicator automatically advances to the calibration
mode (see Section 5.5 on page 14).
LED Display Alpha-Numeric Display Key Pressed Remarks
SET AUTO ? YES key See Section 5.5 on page 14
---- GAGE ? NO key See Section 5.5 on page 14
— ABS ? YES key See Section 5.5 on page 14
SET-UP 15 PSIA NO key Continue to press NO key until the
alpha-numberic display shows the
DLR3110’s full scale range.
YES key Press YES key when the alpha-numeric
display shows the DLR3110’s full scale
range.
SET-UP ACCEPT ?
YES or NO
NO key Continue to press NO key until the
alpha-numberic display shows the
DLR3110’s full scale range. See note
below.
——YES key Accept data
XXXX CAPACITY YES key “XXX” shown on LED display represents
the full scale range and is based on
previous selection.
— EXIT ? YES key Return to SET-UP/ I/O?. (see Section 5.4
on page 13).
NO key Return to XXX/CAPACITY
Table 5-5. Auto Set-Up Mode (Absolute) Parameters Selections