Endress+Hauser AT1000 AT1 User manual

BA00414G/08/EN/03.13
71240706
Operating Instructions
Analog Transmitter AT1000 AT1
Alarm Transmitter for Mechanical Level Gauges

Analog Transmitter AT1000 AT1
2Endress+Hauser
Table of Contents
1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Designated Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, Commissioning, and Operation . . . . . . . . . . . 4
1.3 Operational Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Notes on Safety Conventions and Symbols . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Device Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Registered Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Incoming Acceptance, Transport, Storage . . . . . . . . . . . . 10
3.2 Installation Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Installation and Setting Transmitter . . . . . . . . . . . . . . . . . 12
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1 Span Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1 Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.5 Contact Addresses of Endress+Hauser . . . . . . . . . . . . . . . 23
8 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table of Contents

Analog Transmitter AT1000 AT1
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1SafetyInstructions
1.1 Designated Use
AT1 analog transmitter is designed to be installed onto LT and LTC series level gauging systems. The device
transmits the level information into electric current, voltage, and resistance signals. It can also be equipped
with a maximum of six alarm contact signals.
In addition to transmitting the level, contact signals can be received by this transmitter alone, enabling easy
control of the valve and pump.
1.2 Installation, Commissioning, and Operation
•Mounting, electrical installation, start-up, and maintenance of the instrument may only be performed by
trained personnel authorized by the operator of the facility.
•Personnel must read and understand these installation instructions before performing the procedures.
•The instrument may only be operated by personnel who are authorized and trained by the operator of the
facility. All instructions in this manual must be observed.
•The installer must make sure that the measuring system is correctly wired according to the wiring diagrams.
The measuring system must be grounded.
•Observe all law and regulations applicable and valid for your country and pertaining to the opening and
repairing of electrical devices.
1.3 Operational Safety
1.3.1 Hazardous Areas
Measuring systems for use in hazardous environments are accompanied by separate "Ex documentation”,
which is an integral part of this operating manual. Strict compliance with the installation instructions and
ratings as stated in this supplementary documentation is mandatory.
•Ensure that all personnel are suitably qualified.
•Observe the specifications in the certificate as pipe as national and local regulations.
Caution!
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
1 Safety Instructions

Analog Transmitter AT1000 AT1
4Endress+Hauser
1.4 Notes on Safety Conventions and Symbols
To highlight safety-relevant or alternative operating procedures in this manual, the following conventions have
been used, each indicated by a corresponding symbol on the left.
Safety Conventions
Warning!
Indicates an action or procedure that, if not performed correctly, will lead to personal
injury, a safety hazard, or destruction of the instrument
Caution!
Indicates an action or procedure that, if not performed correctly, may lead to personal
injury or malfunction of the instrument
Note!
Indicates an action or procedure that, if not performed correctly, may indirectly affect
operation or lead to an unexpected instrument response.
Explosion Protection
Device certified for Use in Explosion Hazardous Area
If the device has this symbol embossed on its name plate, it can be installed in an explosion
hazardous area.
Explosion Hazardous Areas
Symbol used in drawings to indicate explosion hazardous areas. Devices located in and
wiringentering areas designated as “explosion hazardous areas” must conform to the
stated type of protection.
Safe Area (non-explosion hazardous area)
Symbol used in drawings to indicate, if necessary, non-explosion hazardous areas. Devices
located in safe areas still require a certificate if wiring enters into explosion hazardous
areas
Electrical Symbols
Direct Voltage
A terminal to or from which a direct current or voltage may be applied or supplied
Alternating Voltage
A terminal to or from which an alternating (sine-wave) current or voltage may be applied
or supplied
Grounded Terminal
A grounded terminal, that is already grounded by means of an earth grounding system for
the purpose of the operator
Protective Grounding (earth) Terminal
A terminal that must be connected to an earth ground prior to making any other
connection to the equipment
Equipotenial Connection (earth bonding)
A connection that must be made to the facility grounding system, such as a star-shaped
connection grounding system or equipotential line, according practices of the country or
company.
EX
EX
1 Safety Instructions

Analog Transmitter AT1000 AT1
Endress+Hauser 5
2 Identification
2.1 Device Designation
2.1.1 Nameplate
The follow technical data are given on the instrument nameplate:
Figure 1: TIIS approval type
Order cord
Measuring range
Serial number
Explosion model
Protection class
Contact output
Contact output
Power
Analog Output
10
Analog output
2 Identification

Analog Transmitter AT1000 AT1
6Endress+Hauser
2.2 Ordering Information
010 Output:
14-20mA
210-50mA
30-1mA
40-20mA
50-10mVDC
60-1VDC
9 Special version, TSP-no. to be spec.
020 Power Type:
1AC
2DC
030 Alarm Output:
0Notused
2 2 - point
4 4 - point
6 6 - point
040 Approval:
B Flame proof d2G4, TIIS + cable gland
E Flame proof d2G4, TIIS
W Weather proof IP65
Y Special version, TSP-no. to be spec.
050 Function:
0 Basic version
9 Special version, TSP-no. to be spec.
060 Power Supply:
1 100VAC, 50/60Hz
2 110VAC, 50/60Hz
3 200VAC, 50/60Hz
4 220VAC, 50/60Hz
524VDC
9 Special version, TSP-no. to be spec.
070 Cable Entry:
A1xthreadG3/4
B2xthreadG3/4
C 1 x thread G 1-1/2
D 1 x thread G 1-1/2, 1x G 3/4
E 1 x gland G 3/4, TF16-11
F 2 x gland G 3/4, TF16-11
G 1 x gland G 1, TF22-15
H1xthreadNPT1
K 1 x thread M25
M 1 x gland G 1-1/4, TF28-20,1x gland G 3/4, TF16-11
Q1xthreadNPT3/4
R2xthreadNPT3/4
Y Special version, TSP-no. to be spec.
080 Installation Gauge:
1 LT1100/LT1200/LT3100/LT3200 R:300mm low pressure LT version
2 LT1400/LT1600/LT3400/LT3600 R:300mm high pressure LT version
3 LTC2100 L:600mm
4 LTC2230/LTC2240 R:600mm
9 Special version, TSP-no. to be spec.
2 Identification

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090 Measuring Range:
A1.5m
12.5m
C3m
D3.5m
E4m
25m
F6m
G8m
310m
H12m
J14m
416m
520m
K25m
630m
9 Special version, TSP-no. to be spec.
100 Alarm Contact:
0Notused
1A=normal
2 B = normal closed
3 C = transfer contact
110 Color:
0 Silver
9 Special version, TSP-no. to be spec.
AT1- Complete product designation
2 Identification

Analog Transmitter AT1000 AT1
8Endress+Hauser
2.3 Scope of Delivery
Caution!
It is extremely important to follow the instructions concerning the unpacking, transportation and storage of
measuring instruments provided in the chapter "Incoming Acceptance, Transportation, Storage".
The scope of delivery consists of:
•Assembled Instrument
Accompanying Documentation:
•Operating Manual (this manual)
•Safety Instructions
2.4 Registered Trademarks
HART®
Registered trademark of HART Communication Foundation, Austin, USA
2 Identification

Analog Transmitter AT1000 AT1
Endress+Hauser 9
3 Installation
3.1 Incoming Acceptance, Transport, Storage
3.1.1 Incoming Acceptance
Check the packing and contents for any signs of damage.
Check the shipment, and make sure that nothing is missing and that the items match your order.
3.1.2 Transport
Caution!
•Follow the safety instructions and conditions of transportation for instruments in excess of 18kg (40 lbs.).
•Do not lift the measuring instrument by its terminal box during transportation.
3.1.3 Storage
Pack the measuring instrument so that it is protected against impacts during storage and transportation.
The original packing material provides the optimum protection for this.
The allowed storage temperature is -20°C to +60°C (-4°F to +140°F)
3.2 Installation Conditions
3.2.1 Dimensions
Flame Proof Type
Alarm Output: 0, 2, 4, 6 points
Figure 2: Dimension of Flame Proof Type
266
Cover
Terminal Box
Ø218
Ø136
Locking Clamp
Locking
Clamp
193
Main Body
3 Installation

Analog Transmitter AT1000 AT1
10 Endress+Hauser
Weather Proof
Alarm Output: 0, 2 Points, Cable Entry G 3/4, NPT 3/4
Figure 3: Dimension of Weather Proof 1
Alarm Output: 0, 2, 4, 6 Points
Figure 4: Dimension of Weather Proof 2
Cable Entry
070:Cable Entry A B 070:Cable Entry A B
A Thread G 3/4 G Gland G1
TF 22-15
B Thread G 3/4 Thread G 3/4 H Thread NPT1
C Thread G 1-1/2 K Thread M25
D Thread G 1-1/2 Thread G 3/4 M Gland G1-1/4
TF28-20
Gland G 3/4
TF16-11
EGland G 3/4
TF16-11 QThreadNPT3/4
FGland G 3/4
TF16-11
Gland G 3/4
TF16-11 R Thread NPT 3/4 Thread NPT 3/4
266
Ø218
Cover
Main body
Ø116
Terminal Box
203
266
Main Body
Cover
Terminal Box
Ø136 Ø218
193
A
B
3 Installation

Analog Transmitter AT1000 AT1
Endress+Hauser 11
3.3 Installation and Setting of Transmitter
Attach the stud bolt, nut, washer, and coupling to the level gauge to the level gauge and AT1 transmitter as
shown in the diagram below.
Preparation of Installation
1. Remove the blind plate of the transmitter that is attached to back of the level gauge.
2. Screw the stud bolts onto the back of the level gauge, as shown in the diagram.
•The side with the shorter screw is the level gauge side.
3. Insert the coupling into the drive shaft of the transmitter, and secure the coupling with the tooth lock
washer and the nut.
This completes the installation procedure.
Setting Procedure of Multiple-alarm Point Model
1. Remove the cover of the transmitter.
2. Loosen the stopper screw at the alarm cam, set the red guideline onto the desired alarm point on the scale,
and secure it with the stopper screw.
3. Repeat step 2 to set each cam.
4. When cam setting is completed, set the level on the standard scale by rotating the coupling to match the
level setting on the level gauge. Then, close the cover and install it onto the level gauge.
This completes the setting procedure of multiple-alarm point model.
Figure 5: Installation of Multiple-alarm Point Model
Micro Switch
Com Setter
Standard Scale
Scale Set Boss
Index
Scale
Com Securing
Screws (2 pieces)
Alarm Cam
Alarm Scale
3 Installation

Analog Transmitter AT1000 AT1
12 Endress+Hauser
Installation Procedure of Non Equipped Model of Alarm Contact
1. Remove the cover of the transmitter if the transmitter is non-equipped alarm specification.
2. Rotate the coupling to adjust the set level of the potentiometer (or the alarm) to correspond to the set
level of the level gauge, and then close the main body cover.
3. Mount the supplied O-ring on the transmitter and align the groove on the coupling with the coupling pin
on the level gauge.
4. Secure the alarm contact to the level gauge with a washer and a nut.
•If the groove on the coupling and the pin are not aligned, the mounting surface between the level gauge
and the transmitter may have gap.
This completes the installation procedure of non equipped model of alarm contact.
Note!
The terminal box can be attached to the tank in any direction, however it is recommended to attach it
sideways.
Figure 6: Installation of AT1 Transmitter
Note!
If there is a gap between the level gauge and the transmitter, do not push and forcibly install the coupling.
Check the position of the coupling and re-install using the procedures above.
Forcibly installing the coupling may cause damage or malfunction of the drive shaft or the device.
Figure 7: Couplings
Level Gauge
Stud Bolt Coupling
AT1 Transmitter
Terminal
Connecting Flange of Transmitter
Drive Shaft
Coupling
Couplin
g
Pin
Level Gauge
Transmitter
3 Installation

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Installation at Low Pressure (LT11/12/31/32)
Figure 8: Installation for Low Pressure
Installation at Medium and High Pressure (LT14/16/34/36)
Figure 9: Installation for Medium and High Pressure
Rear of Float Level Gauge Tooth look washer
Washer
Hexagonal Nut
Sprocket Wheel
Coupling Pin
O-ring
Hexagonal Nut
Coupling
Drive Shaft
Stud Bolt
Rear of Float Level Gauge
O-ring
Tooth Lock Washer Washer
Hexagonal Nut
Coupling Pin
Thread Bolt
Hexagonal Nut
Coupling
Drive Shaft
3 Installation

Analog Transmitter AT1000 AT1
14 Endress+Hauser
3.3.1 Installation of Transmitter to Float Tank Gauge
Figure 10: Transmitter and Tank Gauge
Caution!
When installing the transmitter with cable grands, ensure to use cable glands which are attached to the
transmitter. Select an option for cable glands in the feature 070 of the order structure (refer to "2.2 Ordering
Information").
Terminal box
Transmitter
Level Gauge
Sideways
A
B
Universal Fitting
Thick Steel
Flexible Fitting
with M-type (both ends) Rnion
Refer to cable entry for transmitter.
3 Installation

Analog Transmitter AT1000 AT1
Endress+Hauser 15
4 Wiring
To maintain the transmitter and its accuracy, it is important to set the wiring and connection of the circuit to
be within the accepted range. In AT1 analogue transmitter, there are several output signals. Be alert for the
impedance that is caused by the circuit resistance as a result of electric output.
1. AC: 4 - 20mA or 10 - 50mA Output
(For alarm contact equipped model, refer to 5 also)
Figure 11: AC: 4-20mA or 10 -50mA Output
2. AC: 0 - 1mA, 0 - 20mA, 0 - 10mV, 0 - 1V Output
(For alarm contact equipped model, refer to 5 also)
Figure 12: AC: 0-1mA, 0-20mA, 0-10mV, 0-1V Output
3. DC: 4 - 20mA or 10 - 50mA Output
(For alarm contact equipped model, refer to 5 also)
Figure 13: DC: 4-20mA or 10-50mA Output
4. DC: 0 - 1mA, 0 - 20mA, 0 - 10V, 0 - 1V Output
(For alarm contact equipped model, refer to 5 also)
Figure 14: DC: 0-1mA, 0-20mA, 0-10V, 0-1V Output
䠉
䠇
Potentiometer Converter Power supply
unit
Terminal
AC power supply
Level indicator
䠇
䠉
Potentiometer Converter Power supply
unit
Terminal
AC power supply
Level indicator
Potentiometer Converter Terminal
DC power supply
Level indicator

Potentiometer converter Terminal
DC power supply
Level indicator
4 Wiring

Analog Transmitter AT1000 AT1
16 Endress+Hauser
5. With Alarm Contacts
In case of with contacts in 1, 2, 3, and 4, the following circuits are provided.
A Contact (Normal Open)
Figure 15: A Contact
B Contact (Normal Close)
Figure 16: B Contact
C Contact (Transfer Contact)
Figure 17: C Contact
5
6
7
8
9
10
11
12
13
14
15
16
2 points
4 points
6 points
Terminal No.
5
6
7
8
9
10
11
12
13
14
15
16
2 points
4 points
6 points
Terminal No.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
2 points
4 points
6 points
Terminal No.
4 Wiring

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5Operation
5.1 Span Adjustment
The zero point cannot be changed, however the location of the 100% level can easily be changed.
When the level can be changed;
1. Remove the main body cover when the tank level reaches to the desired 100% level.
2. Set the level indicator to 100% using the span adjustment screw on the converter.
3. Close the main body cover
When the level cannot be changed;
1. Remove the transmitter from the level gauge, and remove the main body cover
2. Rotate the coupling to adjust the scale to the desired 100% level.
3. Set the level indicator to 100% by using the span adjustment screw on the converter.
4. Rotate the coupling again to align the scale of the transmitter with that of the level gauge.
5. Close the main body cover and install to the level gauge.
The allowable range of the span adjustment is from +0% to -20% of the maximum value of the scale of the
transmitter.
Figure 18: Span Adjustment
䚷
Zero Adjustment Screw
Converter
Span Adjustment Screw
123456
5 Operation

Analog Transmitter AT1000 AT1
18 Endress+Hauser
6 Maintenance
After the transmitter and receiver have been installed and adjusted, ensure to replace the cover of the
transmitter.
Check AT1 transmitter periodically in accordance with the following maintenance procedures.
Repairs
The Endress+Hauser repair policy is based on the fact that the measuring devices have a modular design and
that customers are able to undertake repairs themselves. Spare parts are contained in corresponding kits along
with their related replacement instructions. Endress+Hauser provides spare parts for repairs of AT1000 or AT1,
which are located with their order numbers on later pages (refer to "7.1 Spare Parts"). Contact Endress+Hauser
service representatives for further assistance regarding service and spare parts.
Repairs to Ex-approved Devices
When performing repairs on Ex-approved devices, note the following:
•Repairs of Ex-approved devices may only be performed by trained personnel or by Endress+Hauser Service.
•Comply with the prevailing standards, national Ex-area regulations, safety instructions (XA) and other rele-
vant rules.
•Only use original spare parts provided by Endress+Hauser.
•When ordering spare parts, note the device information on the nameplate. Replace parts only with parts that
have the same device information.
•Perform repairs according to the instructions. When completing repairs, perform the specified routine test
on the device.
•Only Endress+Hauser service representatives may convert a certified device into a different certified variant.
•Document all repair work and conversions.
Checking Spots Checking Procedures Countermeasures
Converter
Check for a discrepancy between the
level at the transmitter (after
conversion) and the level at the tank
gauge.
If there is any discrepancy, readjust
the setting accordingly.
Alarm cam
Check for an alarm cam (switching
point). If the switching point shifts from the
right place, readjust the point.
Alarm micro-switch Check for a contact performance. Replace the faulty-micro switch with a new one.
Wiring and connected
terminal
Check for a disconnection or loose con-
nection terminal.
6 Maintenance

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7 Troubleshooting
7.1 Spare Parts
Spare parts are contained in kits. Spare parts for AT1000 or AT1 which can be ordered from Endress+Hauser
are shown with their order numbers in the diagram below. Contact Endress+Hauser service representatives for
further assistance.
37
45
21
21

31
11
11
75
11
75
36
33
38
42
11
21
75
40
38
GEAR PANEL
Potentiometer
Gear Train Panel
Terminal box
Weather proof (4-6 contacts)
Explosion proof (0-6 alarm contacts)
Dial plate (without alarm)
Terminal box
Weather proof (0-2 contact)
Alarm
Dial plate (with alarm)
7 Troubleshooting

Analog Transmitter AT1000 AT1
20 Endress+Hauser
38 Dial Plate
XPN0001 Dial Plate
No. Specification No. Specification
11 O-ring, packing 33 Electronic potentiometer
017880-5025 O ring, Main body, NBR 017871-1202 Potentiometer,CPP45,LT,LTC2230/2240
017880-5026 O ring, Terminal box , small, NBR 56004470 Potentiometer,CPP45,?LTC2110
017880-5027 O ring, El-compartment, large 35 Terminal
017871-1231 O ring, LT/transmitter coupling 56004497 Stud, terminal, Round type, AT1
21 Cover 36 Main shaft
017860-6323 Cover, terminal box, cover 017871-1210 main shaft assembly, AT1
017860-6326 Large-short cover, main body 37 Input gear
017860-6324 Cover, terminal box, large 017871-1211 Gear, d=11mm
31 Electronic power module 017871-1212 Gear,d=15mm
01781-1201 Power unit R/I AC100V 45 Alarm cam
56004475 Power unit R/I AC110V 017871-1220 Alarm cam
56004479 Power unit R/I AC200V 75 Accessory
56004476 Power unit R/I AC220V 70106501 Stud boltM10x40L, (spr.Washer+Washer)
4 sets
32 Electronic R/I converter 017871-1233 Coupling, transmitter, LT11/LT12
017871-1207 converter R/I DC power 017871-1232 Coupling, transmitter, LT14/LT16
56004478 converter R/I AC power
030 Alarm Output:
0Not used
2 2 - point
4 4 - point
6 6 - point
080 Installation Gauge:
1 LT1100/LT1200/LT3100/LT3200 R:300mm low pressure LT version
2 LT1400/LT1600/LT3400/LT3600 R:300mm high pressure LT version
3 LTC2100 L:600mm
4 LTC2230/LTC2240 R:600mm
090 Measuring Range:
A1.5m
12.5m
C3m
D3.5m
E4m
25m
F6m
G8m
310m
H12m
J14m
416m
520m
K25m
630m
AT1- Complete product designation
7 Troubleshooting