Endress+Hauser AT1000 AT1 User manual

BA00414G/08/EN/01.11
71147925
Operating Instructions
Analog Transmitter AT1000 AT1
Alarm transmitter for mechanical level gauges

Analog Transmitter AT1
Endress+Hauser 2
Teble of contents
1. Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Installation, commissioning and operation . . . . . . . . . . . . . 3
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Notes on safety conventions and symbols . . . . . . . . . . . . . 4
2. Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Scope of delive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1 Incoming acceptance, transport, storage . . . . . . . . . . . . . . 9
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Installation with Level gauge . . . . . . . . . . . . . . . . . . . . . . 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 AT1
Endress+Hauser 3
1 Safety instructions
1.1 Designated use
Analog transmitter AT1 is designed to be installed onto LT and LTC series level gauging systems. The device
transmit the level information into electric current, voltage, and resistance signals. Also it could be equipped
with maximum of 6 alarm contact signals.
Along with the level transmission, contact signals can be received by this transmitter alone. Thus, the valve
and pump can easily be controlled.
1.2 Installation, commissioning and operation
• Mounting, electrical installation, start-up and maintenance of the instrument may only be carried out by
trained personnel authorized by the operator of the facility.
• Personnel must absolutely and without fail read and understand these installation instructions before carry-
ing out 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 are to be observed without fail.
• The installer must make sure that the measuring system is correctly wired according to the wiring diagrams.
The measuring system is to be grounded.
• Please observe all provisions 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 AT1
4Endress+Hauser
1.4 Notes on safety conventions and symbols
In order to highlight safety-relevant or alternative operating procedures in the manual, the following
conventions have been used, each indicated by a corresponding symbol in the margin.
Safety conventions
Symbol Meaning
Warning!
A warning highlights actions or procedures which, if not performed correctly,
will lead to personal injury, a safety hazard or destruction of the instrument.
Caution!
Caution highlights actions or procedures which, if not performed correctly,
may lead to personal injury or incorrect functioning of the instruments.
Note!
A note highlights actions or procedures which, if not performed correctly,
may indirectly affect operation or may lead to an instrument response which
is not planned.
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 area
Symbol used in drawings to indicate explosion hazardous area.
- Devices located in and wiring entering areas with the designation
"explosion hazardous areas" must conform with 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 their outputs run
into explosion hazardous areas.
Direct voltage
A terminal to which or from which a direct current or voltage may be
applied or supplied
Alternating voltage
A terminal to which or from which an alternating (sine-wave) current or
voltage may be applied or supplied
Grounded terminal
A grounded terminal, which as far as the operator is concerned, is already
grounded by means of an earth grounding system.
Protective grounded (earth) terminal
A terminal which must be connected to earth ground prior to making any
other connection to the equipment.
Equipotential connection (earth bonding)
A connection made to the plant grounding system which may be of type e.g.
neutral star or equipotential line according to national or company practice
EX
EX
1 Safety instructions

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

Analog Transmitter 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:
A 1 x thread PF (G) 3/4
B 2 x thread PF (G) 3/4
C 1 x thread PF (G) 1-1/2
D 1 x thread PF (G) 1-1/2, 1x PF (G) 3/4
E 1 x gland PF (G) 3/4, TF16-11
F 2 x gland PF (G)3/4, TF16-11
G 1 x gland PF (G) 1, TF22-15
H1xthreadNPT1
K 1 x thread M25
M 1 x gland PF (G) 1-1/4, TF28-20,1x gland PF (G) 3/4, TF16-11
Q 1 xthread NPT 3/4
R 2 xthread NPT3/4
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

Analog Transmitter AT1
Endress+Hauser 7
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
2B=nomalclosed
3 C = transfer contact
110 Colour:
0 Silver
9 Special version, TSP-no. to be spec.
AT1- Complete product designation
2 Identification

Analog Transmitter AT1
8Endress+Hauser
2.3 Scope of delivey
Caution!
It is essential to follow the instructions concerning the unpacking, transport and storage of
measuring instruments given in the chapter "Incoming acceptance, transport, storage".
The scope of delivery consists of:
• Assembled instrument
Accompanying documentation:
• Operating manual (this manual)
2.4 Registered trademarks
HART®
Registered trademark of HART Communication Foundation, Austin, USA
2 Identification

Analog Transmitter 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, make sure nothing is missing and that the scope of supply matches your order.
3.1.2 Transport
Caution!
Follow the safety instructions and transport conditions for instruments of more than 18kg. Do not lift the
measuring instrument by its housing in order to transport it.
3.1.3 Storage
Pack the measuring instrument so that is protected against impacts for storage and transport. The original
packing material provides the optimum protection for this.
The permissible storage temperature is -20°C...+60°C (-4°F...+140°F)
3 Installation

Analog Transmitter AT1
10 Endress+Hauser
3.2 Installation conditions
3.2.1 Dimensions
Flame proof type
Alarm output: 0, 2, 4, 6 points
Weather proof
Alarm output: 0, 2 points, In case of Cable Entry PF(G)3/4,NPT3/4
266
Cover
Terminal box
Ø218
Ø136
locking clamp
locking
clamp
193
Main body
266
Ø218
Cover
Main body
Ø116
Terminal box
203
3 Installation

Analog Transmitter AT1
Endress+Hauser 11
Alarm output: 0, 2, 4, 6 points
Cable Entry
266
Main body
Cover
Terminal box
Ø136 Ø218
193
A
B
AB
A
B
C
E
F
G
H
K
M
070:Cable Entory
thread PF(G)3/4
thread PF(G)3/4
thread PF(G)1-1/2
D
thread PF(G)1-1/2 thread PF(G)3/4
gland (G)3/4䇭TF16-11
thread PF(G)3/4
gland PF(G)3/4䇭TF16-11
gland PF(G)1䇭TF22-15
thread NPT1
thread M25
gland PF(G)3/4䇭TF16-11
gland PF(G)1-1/4䇭TF28-20 gland PF(G)3/4䇭TF16-11
Q thread NPT3/4
R
thread NPT3/4 thread NPT3/4
3 Installation

Analog Transmitter AT1
12 Endress+Hauser
3.3 Installation with Level gauge
Attach the stud bolt, nut, washer, and coupling as shown in the diagram.
1. Take out the blind plate attached to back of lavel gauge
2. Screw the stud bolts on the back of the level gauge as shown in the diagram.
(the side with the shorter screw is the level gauge side)
Note!
Terminal box is available in any direction, but it is preferable to install in sideways.
3. Insert the coupling in the core nozzle of the transmitter and tighten the coupling into the transmitter using
the toothed lock washer and nut.
Multiple - alarm point model
• Remove the cover. Loosen the stopper screw at the alarm cam, then set the red guideline onto the desired
alarm point on the scale and secure it with the screw. Repeat this step in order to set each cam.
• When the setting of cam has all finished, 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.
Level gauge
stud bolt Coupling
Transmitter
Terminal
Microswitch
Com setter
Standard scale
Scale set boss
Index
Scale
Com securing
screws(2 pieces)
Alarm cam
Alarm Scale
3 Installation

Analog Transmitter AT1
Endress+Hauser 13
Alarm contact non equipped model
• Remove the cover for the transmitter. Next, rotate the coupling in order to adjust the set level of the poten-
tiometer (or the alarm) to correspond to the set level of the level gauge. Colse the main body cover.
4. Attach the transmitter and the level gauge by connecting coupling gap on the transmitter and the coupling
pin on the level gauge. If the coupling’s gap and the pin do not meet perfectly, the transmitter and the level
gauge cannot be connected.
Note!
If the connection does not go smoothly, check to make sure that you are connecting the correct points
(coupling gap and pin) on both sides of the device.
If you press the transmitter and the level gauge too firmly against each other, you might break the main shaft
and the device will no longer be good for use.
Connecting flange of transmitter
Shaft
Coupling
Coupling pin
Level gauge
Transmitter
3 Installation

Analog Transmitter AT1
14 Endress+Hauser
Installation with Low pressure (LT11/12/31/32)
Installation with Medium and high prressure(LT14/16/34/36)
Rear of float level gauge Toothed look washer
Washer
Hexagonal nut
Sprocket wheel
Coupling pin
O-ring
Hexagonal nut
Coupling
Shaft
Stud bolt
Rear of float level gauge
O-ring
Toothed lock washer Washer
Hexagonal nut
Coupling pin
Threaded bolt
Hexagonal nut
Coupling
Shaft
3 Installation

Analog Transmitter AT1
Endress+Hauser 15
3.3.1 Tank installation with Float Tank Gauge
Terminal box Transmitter Level gauge
Sideways
A
B
Universal fitting
Thick steel
Flexible fitting
with M-type (both ends) union
See cable entry for transmitter
3 Installation

Analog Transmitter AT1
16 Endress+Hauser
4 Wiring
In order 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 - 50mAoutput
(For alarm contact equipped model, refer to 5 also)
2. AC, 0 - 1mA, 0 - 20mA, 0 - 10mV, 0 - 1V output
(For alarm contact equipped model, refer to 5 also)
3. DC, 4 - 20mA or 10 - 50mA output
(For alarm contact equipped model, refer to 5 also)
4. DC, 0 - 1mA, 0 - 20mA, 0 - 10V, 0 - 1V output
(For alarm contact equipped model, refer to 5 also)
−
＋
Potentiometer Converter Power supply
unit Terminal
AC power supply
Level indicator
＋
−
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 AT1
Endress+Hauser 17
5. With Alarm contacts
In case of with contacts in 1, 2, 3, 4, please refer to following circuits.
A contact (normal open)
B contact (normal close)
C contact (transfer 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

Analog Transmitter AT1
18 Endress+Hauser
5Operation
5.1 Span Adjustment
Although point zero can not be changed, The location of 100% level can easily be changed.
1. level change is available
• Take out the main body cover when the tank level reaches to the new 100% level that you like to change,
• Set the level indicator to 100% using the span adjustment screw on the converter.
• Close the main body cover
2. level change is not available
• take out transmitter from level gauge and remove the main body cover
• rotate the coupling to adjust the scale to the desired 100% level.
• set the level indicator to 100 %by using the span adjustment screw
• rotate the coupling again to match the transmitter’s scale to the level gauge’s scale.
• Close the main body cover and install to level gauge.
Range of span adjustment is between +0 % and -20% of the maximum value.
Zero adjustment screw
Converter
Span adjustment scre
w
123456
5 Operation

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Endress+Hauser 19
6 Maintenance
After adjusting for transmitter and receiver installation, there is no need to consider about operating procedure.
Please check on AT1 periodically in accordance with following maintenance procedure.
Repaires
The Endress+Hauser repair concept assumes that the measuring devices have a modular design and that
customers are able to undertake repairs themselves. Spare parts are contained in suitable kits. They contain
the related replacement instructions. All the spare parts kits which you can order from Endress+Hauser for
repairs to the Analog Transmitter AT1 are listed with their order numbers on "7.1 Spare parts".
Please contact Endress+Hauser Service for further information on service and spare parts.
Repaires to Ex-approved devices
When carrying out repairs to Ex-approved devices, please note the following:
• Repairs to Ex-approved devices may only be carried out by trained personnel or by the Endress+Hauser
Service.
• Comply with the prevailing standards, national Ex-area regulations and certificates.
• Only use original spare parts from Endress+Hauser.
• When ordering a spare part, please note the device designation on the nameplate. Only replace parts with
identical parts.
• Carry out repairs according to the instructions. On completion of repairs, carry out the specified routine test
on the device.
• Only Endress+Hauser Service may convert a certified device into a different certified variant.
• Document all repair work and conversions.
Checking spot Checking procedure Countermeasure
Converter
Check for the discrepancy between the
level at the transmitter (after the
conversion) and the level at the tank
gauge.
If there is any discrepancy, readjust
the setting accordingly.
Alarm cam Check alarm cam (switching point) If switching point shifts from the right
place, adjust the point again.
Alarm micro-switch Check a contact performance. Replace performance failure micro-switch.
Wiring and connected
terminal
Check disconnection and connection
terminal loose
6 Maintenance

Analog Transmitter AT1
20 Endress+Hauser
7Troubleshooting
7.1 Spare parts
Spare parts are contained in kits. Spare parts which you can order from Endress+Hauser for the Transmitter
are shown with their order numbers in the diagram below. For more information on service and spare parts,
contact Endress+Hauser.
37
45
21
21
32
31
11
11
75
11
75
36
33
38
40
42
11
21
75
40
38
GEAR PANEL
Potentiometer
Without ALARM
With ALARM
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