Intec Controls PolyGard DT5-1125 V1 User manual

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
September 16, 2014 – Revision
PolyGardDT5-1125 V1
Electrochemical Ammonia Transmitter
Serial No. AT03-005
User Manual
December 2013

Specifications subject to change without notice. | USA 140916 | Page 02 of 16
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DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
1Intended Use..........................................................................................................3
2Functional Description .........................................................................................3
2.1Control Mode .......................................................................................................................... 3
2.2Sensor..................................................................................................................................... 3
3Installation .............................................................................................................4
3.1Mounting Instructions.............................................................................................................. 4
3.2Installation............................................................................................................................... 4
4Electrical Connection............................................................................................4
4.1Wiring Connection................................................................................................................... 5
5Commissioning .....................................................................................................5
5.1Correction of the Zero-point at the Analog Output Signal ...................................................... 5
5.2Calibration............................................................................................................................... 6
5.3Manual Calibration .................................................................................................................. 6
5.3.1Zero-point ............................................................................................................................ 6
5.3.2Gain..................................................................................................................................... 6
5.3.3Calculation of Control Voltage............................................................................................. 7
5.4Calibration with DGC5 Service Tool ....................................................................................... 7
5.5Calibration with DGC5_EasyConf........................................................................................... 7
5.6Addressing, only for DGC5_Bus Mode................................................................................... 8
5.7Option Relay Output ............................................................................................................... 8
6Service and Inspection .........................................................................................9
6.1Inspection................................................................................................................................ 9
6.2Service and Calibration........................................................................................................... 9
6.3Exchange of Sensor Element ................................................................................................. 9
7Troubleshooting..................................................................................................10
7.1Analog Mode......................................................................................................................... 10
7.2DGC5_Bus Mode.................................................................................................................. 10
8Cross-sensitivity Data.........................................................................................11
9Technical Data.....................................................................................................12
10Figures .................................................................................................................14
11Part Disposal .......................................................................................................16
12Notes and General Information..........................................................................16
12.1Intended Product Application................................................................................................ 16
12.2Installers’ Responsibilities..................................................................................................... 16
12.3Maintenance ......................................................................................................................... 16
12.4Limited Warranty................................................................................................................... 16

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
Electrochemical Ammonia Transmitter
1 Intended Use
The PolyGardNH3analog/digital transmitter DT5-1125 with digital processing of the measured values and
temperature compensation is used to detect leakages of ammonia in the ambient air.
The sites intended for use are all areas being directly connected to the public low voltage supply, e.g. domestic,
commercial and industrial ranges as well as small enterprises (acc. to EN 50 082).
The PolyGardNH3analog/digital transmitter must not be used in potentially explosive atmospheres. The
transmitter must only be employed in areas within the environmental conditions as specified in the Technical Data.
2 Functional Description
2.1 Control Mode
In addition to the analog output the transmitter is equipped with a serial interface RS-485 for the connection to the
PolyGard®DGC5 system.
Analog mode:
The analog output can be selected as current signal with (0)4-20 mA or as voltage signal (0)2-10 V. In the 4-20 mA
mode and without any supplementary options, the DT5-1125 also works in the 2-wire technique.
DGC5_Bus mode:
The transmitter can be connected to the PolyGard®DGC5 system via the RS-485 interface. In this mode there is
an analog input for the connection of an additional 4-20 mA transmitter. The two measuring values are transmitted
via the RS-485 interface to the gas controller.
The cable topology for the RS-485 bus can be taken from the “Guidelines for wiring and commissioning of the
DGC5 hardware”.
The two control modes are available in parallel.
2.2 Sensor
The sensor portion of the transmitter is a sealed micro-fuel cell with three electrodes, sensing, counter and
reference. The ambient air enters the cell through a diffusion barrier into the liquid electrolyte of the sensor. The
chemical process of the measurement is one of reduction where one molecule of the target gas is exchanged for
one molecule of oxygen. The reaction drives the oxygen molecule to the counter electrode, generating a DC
microampere signal between the sensing and counter electrodes. This signal is linear to the volume concentration
of the sensed gas. The signal is evaluated by the connected amplifier and transformed into a linear output signal.
Electrochemical processes always lead by-and-by to a loss of sensitivity. Therefore regular calibration of the zero-
point and of the gain is necessary. See also section 6.
Caution:
There is a small quantity of corrosive liquid in the sensor element. If in case of damage persons or objects
encounter the liquid, you have to clean the affected areas as fast and carefully as possible with tap water. Out of
use sensors must be disposed in the same way as batteries.

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DT5-1125 V1 – UserManual
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3 Installation
Caution: Avoid any force (e.g. by thumb) on the sensor element during operation or installation. Electronics can be
destroyed by static electricity. Therefore, do not touch the equipment without a wrist strap connected to ground or
without standing on conductive floor (acc. to DIN EN 100015).
3.1 Mounting Instructions
When choosing the mounting site please pay attention to the following:
The specific weight of Ammonia, NH3, is lower than that of air (factor 0.59).
Installation at the highest point possible with a distance of ca. 300 mm to the ceiling.
Select the location of the sensor according to local regulations.
Consider the ventilation conditions! Do not mount the transmitter in the centre of the airflow (air passages,
suction holes)
Mount the transmitter at a location with minimum vibration and minimum variation in temperature (avoid
direct sunlight).
Avoid locations where water, oil etc. may influence proper operation and where mechanical damage might
be possible.
Provide adequate space for maintenance and calibration work.
Duct mounting
Mount only in a straight section of duct with minimum air vortex. Keep a minimum distance of 1 m (3.5 feet)
from any curve or obstacle.
Mount only in a duct system with a maximum air velocity of 10 m/s (2000 ft/min) or less.
Mounting must be performed so that the airflow is in line with probe openings.
3.2 Installation
Open cover of enclosure. Unplug PCB from terminal blocks.
Fix bottom part by screws vertically to the wall (terminal blocks to the ground).
Re-plug the PCB at X4 and X5. Replace the cover.
4 Electrical Connection
Consider static electricity! See 3. Mounting.
Installation of the electrical wiring should only be performed by a trained specialist according to the
connection diagram and according to the corresponding regulations, without any power applied to
conductors!
Avoid any influence of external interference by using shielded cables.
Recommended cable for analog mode: J-Y(St)Y 2x2x0.8 LG (20 AWG), max. loop resistance 73 /km
(20.8 /1000 ft).
Serial Interface Mode:
Required cable for RS-485 mode: J-Y(St)Y 2x2x0.8 LG (20 AWG), max. loop resistance 73 /km (20.8
/1000 ft)
When selecting and installing the cables you have to comply with the regulations concerning the RS 485
bus installation. The installations have to be executed in line topology. Cable length and type have to be
considered as well.
When the PBC is mounted, it is important to ensure that the wire shields or any bare wires do not short the
PCB.

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DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
4.1 Wiring Connection
Open cover of enclosure. Unplug PCB from terminal blocks X4 and X5.
Enter cable through hole; connect cable leads to the terminal blocks. See fig. 1 and 2.
Re-plug the basic PCB at the terminal blocks X4, X5. Close cover.
Note. The connection of the power supply at the output signal (X4 pin 4) can destroy the transmitter.
5 Commissioning
Consider commissioning instructions at any exchange of sensor elements.
Only trained technicians should perform the following:
Check mounting location.
Select output signal form: Current or voltage, and starting point 0 or 20%. See fig. 4.
Check supply voltage.
Check PCB for correct mounting at X4 and X5.
Check sensor element for correct mounting at terminal X3 of the PCB.
Addressing of the transmitter in the DGC5_Bus mode.
Calibration of the transmitter (if not factory-calibrated)
Required instruments to calibrate the transmitter:
Test gas bottle with synthetic air (20 % O2, 80 % N) or NH3-free ambient air.
Test gas bottle with NH3in the range of 20 to 70 % of the measurement range. Rest is synthetic air.
Gas pressure regulator with flow meter to control the gas flow to 300 ml/min
Sensor head calibration adapter with tube. Type calibration set AT1110SO1. See Fig. 5.
Digital voltmeter with range 0 – 2 VDC, accuracy 1%.
Screwdriver small.
Calibration tool DGC5 STL (only for calibration with service tool DGC5).
DGC5 configuration and calibration software incl. USB/RS-485 communication set (only for software
calibration mode).
Note: Prior to calibration the sensor element must be fully stabilized by applying power voltage for at least 18 hours
without interruption.
Please observe proper handling procedures for test gas bottles according to TRGS 220!
Attention: NH3calibration gas is toxic, never inhale the gas!
Symptoms at high concentrations: Loss of motility and consciousness.
Procedure if exposed: Get the victim into fresh air at once, consult doctor.
5.1 Correction of the Zero-point at the Analog Output Signal
The analog output signal is factory set to the zero-point. If necessary, a manual adaptation of the analog signal is
possible within 10 sec. after having applied the supply voltage.
Jumper 0-20 % for signal start has to be set (= 4 mA or 2 V).
Connect digital voltmeter (300 mV) at test pint “Test” (measuring signal ~ 40 mV = 4.0 mA).
Switch on the operating voltage.
Each pressing on the “Zero” push-button increases the signal by + 0.5 mV (0.05 mA). Press the button
repeatedly until the measuring signal reaches 40 ± 0.2 mV. After 44mV the signal starts again at 36 mV.
The correction is only possible within the 10 seconds after having switched on the power supply. An
impulse pause of more than 10 sec. cancels the release of the correction function.

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
5.2 Calibration
Depending on the version and the control mode there are three different possibilities to calibrate the transmitter:
Manual calibration
Manual calibration is only possible if the transmitter is equipped with the push-button “Zero” and the potentiometer
“Gain” (= version for manual calibration).
Manual calibration is possible both in analog mode and in DGC5_Bus mode.
In the DGC5_Bus mode the jumper V-A has to be set before manual calibration. Only by doing so the control
voltage is available at the test pins X6. Remove the jumper after calibration
Calibration with the Service Tool DGC5
In the standard version (equipped with the communication connector X12) the transmitter is delivered for tool
and/or software calibration.
In the analog mode the service tool calibration is only possible with the 3-wire technique of the transmitter!
In the DGC5_Bus mode calibration is always possible.
Software calibration via PC with Software DGC5_EasyConf
In the standard version (equipped with the communication connector X12) calibration can also be done by means
of the configuration and calibration software DGC5_EasyConf.
Software calibration is possible for both control modes.
5.3 Manual Calibration
5.3.1 Zero-point
Connect digital voltmeter to pin “Test”.
Connect the calibration adapter carefully to the sensor element.
Apply zero calibration gas, (300 ml/min; 1 Bar (14.5psi) ± 10%), or other clean air source to the sensor
element.
Wait 3 minutes until the signal is about 40 mV and stable, then press the button Zero for 5 seconds.
Finished!
After successful calibration the measuring signal is corrected automatically. Depending on the selected
signal starting point the measuring signal shows the following values:
Signal start at 2 V or 4 mA 40 mV = 0 ppm
Signal start at 0 V or 0 mA 0 mV = 0 ppm
If the zero-point is out of the admissible range (> 20 mV at starting point 0% / > 60 mV at starting point
20%) before calibration, there is no correction of the measuring signal. The sensor has to be replaced.
Remove calibration adapter carefully by turning lightly. Check the sensor for correct mounting!
5.3.2 Gain
Connect digital voltmeter to pin “Test”.
Connect calibration adapter carefully to the sensor element.
Apply test gas NH3(20 to 70% of range) to the sensor (300 ml/min; 1 Bar ± 10%)
Wait 3 minutes until the sensor is stable, adjust signal with gain potentiometer ”Gain” until the signal
corresponds to the calculated value ± 3 mV, see calculation section 5.3.3 and is stable.
Remove calibration adapter with a careful light turn. Check the sensor for correct mounting!
By limiting the gain factor, calibration will not be possible any more when the sensitivity of the sensor
reaches a residual sensitivity of 30 %. Then the sensor has to be replaced.

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
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5.3.3 Calculation of Control Voltage
Control voltage (mV) = 160 (mV) x test gas concentration NH3(ppm) + 40 (mV)
measuring range NH3(ppm)
Example
Measuring range NH3300 ppm 1000 ppm
Test gas concentration NH3150 ppm 300 ppm
Control voltage 120 mV 88 mV
160 (mV) x 150 (ppm) + 40 (mV) = 120 mV.
300 ppm
5.4 Calibration with DGC5 Service Tool
Connect the DGC5 Service Tool to the transmitter, open menu “Calibration”.
Enter measuring range and test gas concentration.
Connect calibration adapter carefully to the sensor element
Apply synthetic air (300 ml/min; 1 Bar (14.5 psi) ± 10%), or NH3-free ambient air.
Wait until the measuring value is stable, and then perform automatic zero calibration.
Apply calibration test gas NH3to the sensor (300 ml/min; 1 Bar (14.5 psi) ± 10%).
Wait until the measuring value is stable, and then perform automatic gain calibration.
Remove calibration adapter carefully by turning lightly. Check the sensor for correct mounting!
By limiting the gain factor, calibration will not be possible any more when the sensitivity of the sensor
reaches a residual sensitivity of 30 %. In this case the sensor has to be replaced.
Further information can be taken from the user manual of the DGC5 Service Tool.
5.5 Calibration with DGC5_EasyConf
Connect the PC via USB/RS-485 communication set to the transmitter, open menu “Calibration”.
Enter measuring range and test gas concentration.
Connect calibration adapter carefully to the sensor element
Apply synthetic air (300 ml/min; 1 Bar (14.5 psi) ± 10%), or NH3-free ambient air.
Wait until the measuring value is stable, and then perform automatic zero calibration.
Apply calibration test gas NH3to the sensor (300 ml/min; 1 Bar (14.5 psi) ± 10%).
Wait until the measuring value is stable, and then perform automatic gain calibration.
Remove calibration adapter carefully by turning lightly. Check the sensor for correct mounting!
By limiting the gain factor, calibration will not be possible any more when the sensitivity of the sensor
reaches a residual sensitivity of 30 %. In this case the sensor has to be replaced.
Further information can be taken from the user manual of the DGC5 Configuration and Calibration Software.

Specifications subject to change without notice. | USA 140916 | Page 08 of 16
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
5.6 Addressing, only for DGC5_Bus Mode
In the DGC5_Bus mode each transmitter gets its communication address.
In the standard version with the communication connector X12, addressing is done by means of the DGC5 Service
Tool or by the DGC5 Configuration and Calibration Software. See user manual of the Service Tool or of the
Configuration and Calibration Software.
In the manual addressing version which can be identified by the address switch being equipped, there is a
maximum of 60 addresses to be selected. See fig. 3.
The jumper is responsible to define the address group and the switch to define the address according to the
following table.
Switch
position
Jumper pos. 01
= address
Jumper pos. 02
= address
Jumper pos. 03
= address
Jumper pos. 04
= address
0 inactive inactive inactive inactive
1 01 16 31 46
2 02 17 32 47
3 03 18 33 48
4 04 19 34 49
5 05 20 35 50
6 06 21 36 51
7 07 22 37 52
8 08 23 38 53
9 09 24 39 54
A 10 25 40 55
B 11 26 41 56
C 12 27 42 57
D 13 28 43 58
E 14 29 44 59
F 15 30 45 60
5.7 Option Relay Output
The two relays are activated in dependence of the gas concentration. If the gas concentration exceeds the adjusted
alarm threshold, the corresponding relay switches on. If the gas concentration falls below the threshold minus
hysteresis, the relay switches off again.
The contact function for relay 2, NC (normally closed) or NO (normally open), can be selected via the jumper
NO/NC. See fig 1 and 3. Relay 1 is equipped with a change-over contact.
Via the ModBus interface the two alarm thresholds and the hysteresis are freely adjustable at the PC within the
measuring range. The procedure can be read from the user manual “ModBus Software”.
The following parameters are factory-set for measuring range 300 ppm:
Alarm threshold 1 = Relay 1: 80 ppm
Alarm threshold 2 = Relay 2: 250 ppm
Switching hysteresis: 15 ppm

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
6 Service and Inspection
Inspection, service and calibration of the transmitters should be done by trained technicians and executed at
regular intervals. We therefore recommend concluding a service contract with MSR or one of their authorized
partners.
According to EN 45544-4, inspection and service has to be executed at regular intervals. The maximum intervals
have to be determined by the person responsible for the gas warning system according to the legal requirements.
MSR-E recommends checking the PolyGard Transmitter every three months and maintaining it every 12 months. If
different intervals are indicated, always consider the shortest interval.
Inspections and services must be documented. The date for the next maintenance has to be affixed to the
transmitter.
6.1 Inspection
The PolyGard Transmitter should be controlled regularly by a competent person according to EN 45544-4. The
following has to be checked in particular:
Maintenance/ calibration interval not exceeded.
Visual inspection of the transmitter including cable for damage etc.
Remove dust deposits, especially at the gas inlet.
The filter at the gas inlet has to be replaced if extremely dirty.
6.2 Service and Calibration
When performing the maintenance you have to do the calibration and the functional test in addition to the
inspection.
Calibration: See section 5.
Functional test: Check the output signal at the test pins during calibration.
6.3 Exchange of Sensor Element
Consider static electricity! See point 3.
Sensor should always be installed without voltage applied.
Unplug basic PCB carefully from the terminal blocks on base.
Unplug old sensor element from the PCB.
Take new sensor element out of original packing.
Plug in sensor element into the PCB at X3.
Plug in carefully the PCB into terminal block X4, X5.
Calibrate according to section 5.

Specifications subject to change without notice. | USA 140916 | Page 10 of 16
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
7 Troubleshooting
7.1 Analog Mode
Trouble Cause Solution
Output signal < 3 mA / 1,5 V
and/or control voltage < 30 mV
only for starting signal 2V/4 mA
Jumper 0-20 % not set Check jumper position
Power voltage not applied
Measure tension at X4:
Two-wire: Pin 1 (+) and 4 (-)
Three-wire: Pin 1 (+) and 2 (-)
PCB not plugged in correctly at X4 and
X5
Replug PCB correctly
Wire break Check the wiring
Output signal > 22 mA /220 mV Short-circuit Check the wiring
Control voltage does not reach
the calculated value
Sensor element not calibrated Calibrate sensor element
Sensor sensitivity < 30 % Replace sensor element
No reaction of the output signal
in spite of gas concentration
Power voltage not applied Measure tension at X4
Signal (Pin 4) not wired correctly Check the wiring
7.2 DGC5_Bus Mode
Trouble Cause Solution
Yellow LED not shining Power voltage not applied Measure tension at X4:
Pin 1 (+) and 2 (-)
PCB not plugged in correctly at X4/X5 Replug PCB correctly
Wire break Check wiring
Yellow LED not flashing No communication at the transmitter Transmitter not addressed,
check bus wiring incl.
topology and termination
Voltage < 16 V
No control voltage at calibration Jumper V-A not set Set the jumper. Remove it
after calibration!

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
8Cross-sensitivity Data
The table does not claim to be complete. Other gases can have an influence on the sensitivity, too. The indicated
sensitivity data are only standard values referring to new sensor elements.
Gas Chemical
formula
Gas
concentration
Exposure
time (min)
Influence on the reading
(ppm NH3)
Chlorine CL210 ppm 5 0
Ethanol C2H6O 100 ppm 5 0
Ethylene C2H41000 ppm 5 0
Carbon monoxide CO 200 ppm 5 0
Carbon dioxide CO25.000 ppm 5 0
Methane CH45.000 ppm 5 0
Hydrogen H21.000 ppm 5 < -10 (MB 100); <-150 (MB 300)
Sulphur dioxide SO210 ppm 5 < 15 (MB 100); < 12 (MB 300)
Hydrogen sulphide H2S 100 ppm 5 < 30
Nitrogen monoxide NO 20 ppm 5 < 2 (MB 100); 0 (MB 300)
Nitrogen dioxide NO220 ppm 5 0

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
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9 Technical Data
General sensor performances
Gas type Ammonia (NH3)
Sensor element Electrochemical, diffusion
Measuring range 0 - 100 ppm / 0 - 300 ppm / 0 - 1000 ppm
Pressure range Atmosphere ± 15 %
Humidity 15 – 90 % RH non condensing
Storage temperature range 5 °C to + 30 °C (41 °F to 86 °F)
Storage time Max. 6 months
Accuracy ± 30 ppm (range 300 / 1000 ppm)
± 5 ppm (range 100 ppm)
Repeatability ± 10 % of reading
Zero point drift < ± 50 ppm /year (range 300/ 1000 ppm)
< ± 10 ppm /year (range 100 ppm)
Long term output drift 2 % measured value/month
Response time t90 120 s (range 300 / 1000 ppm)
t90 90 s (range 100 ppm)
Temperature range -10 °C to + 50 °C (14 °F to 122 °F) w/o heating
Life expectancy > 2 years/normal operating environment
Electrical
Power supply 18 - 28 VDC/AC, reverse polarity protected
Power consumption (without options)
- Analog mode
- DGC5_Bus mode
22 mA, max. (0,6 VA)
12 mA, max. (0,3 VA)
Output signal
Analog output signal
Selectable: Current / tension
Starting point 0 / 20 %
(0) 4 – 20 mA, load 500 ,
(0) 2 - 10 V; load ≥50 k 
proportional, overload and short-circuit proof
Serial interface
Transceiver RS 485 / 19200 Baud
Protocol, depending on version MSR_DGC5 or ModBus
Physical
Enclosure Plastic, Type "A" Polycarbonate
Flammability UL 94 V2
Enclosure colour Light gray RAL 7032
Dimensions (W x H x D) 94 x 130 x 57 mm (3.7 x 5.12 x 2.25 in.)
Weight Approx. 0.3 kg (0.7 Ib.)
Protection class IP65
Mounting Wall mounting
Enclosure Galvanized Steel, Type "0" Galvanized steel w/zinc coating
Enclosure colour Light gray
Dimensions (W x H x D) 113 x 135 x 45 mm (5.35 x 4.5 x 1.8 in.)
Protection class NEMA 1 (IP42)
Mounting Wall (surface) mounted,
or single gang electrical box
Cable entry Standard 1 x M 20
Wire connection Screw-type terminal: 0.25 to 2.5 mm2
24 to 14 AWG
Wire distance Current signal ca. 500 m (1500 ft.)
Voltage signal ca. 200 m (500 ft.)

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
Guidelines EMC Directive 2004/108/EC
EN 61010-1; 2010
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
CE
Warranty Two years material and workmanship,
12 months normal exposure for sensor
element
Options
Heating
Temperature controlled 3 °C ±2 °C (37 °F ± 4 °F)
Ambient temperature - 40 °C (-40 °F)
Power consumption 0.3 A; 7.5 VA
Analog input
Only for RS-485 mode 4 – 20 mA overload and short-circuit proof,
input resistance 200 
Tension for external analog transmitter 24 VAC/DC depending on the power supply
max. load 50 mA

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
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10 Figures
Application: Analog mode
Fig. 1
Two-wire connection Three-wire connection
-
4 - 20 mA output signal without - VDC output signal
options - 0 – 20 mA output signal
- Relay output
- LCD display
- Heating
Application: DGC5_Bus or ModBus mode
Fig. 2
Connection field bus and tension Connection analog transmitter
- Two- or three-wire connection,
depending on transmitter type
Controller
Transmitter
DT5-1125
0 V
4-20 mA
24 V
X4
1
2
3
4
5
6
7
0 V
24 VDC_Out
24 VDC
Analog_Out
4-20 mA_Inp
Bus_A
Bus_B
X5
2
3
4
5
1
Transmitter
DT5-1125
X4
1
2
3
4
5
6
7
0 VDC
24 VDC_Out
24 VDC
Analog_Out
4-20 mA_Inp
Bus_A
Bus_B
X5
R1 2
3
4
5
1
R2
Option
Relay
NO NC
Bus_A
24 VDC
Bus_B 0 VDC
Transmitter
DT5-1125
X4
1
2
3
4
5
6
7
0 VDC
24 VDC_Out
24 VDC
Analog_Out
4-20 mA_Inp
Bus_A
Bus_B
X5
R1 2
3
4
5
1
R2
Option
Relay
NO NC
0 VDC
4-20 mA
24 VDC
Analog
Transmitter
Controller
Transmitter
DT5-1125
0 V
4-20 mA
24 V
X4
1
2
3
4
5
6
7
0 V
24 V_Out
24 VAC/DC
Analog_Out
4-20 mA_Inp
Bus_A
Bus_B
X5
R1 2
3
4
5
1
R2
Option
Relay
NO NC
Do not connect power supply at this pin.
(0 VDC, 24 VAC or 0VAC will destroy the transmitter.)
0 VAC/DC
24 VAC/DC
Do not connect 24 VAC at pin 2 and pin 4
or +24 VDC at pin 2 and 0 VDC at pin 4!!
Short-circuit = R 10 Ohm burns up!!
Transmitter
DT5-1125
X4
1
2
3
4
510
Ω
Analog_Out

Specifications subject to change without notice. | USA 140916 | Page 15 of 16
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
PCB
Fig. 3
Terminal block
Selection analog output signal
Fig. 4
Jumper 0- 20 % Jumper V-A Output signal
Not set Not set 0 – 20 mA
Set Not set 4 – 20 mA
Not set Set 0 – 10 V
Set Set 2 – 10 V
54321
1234567
X5
X4
Calibration adapter
Fig. 5
Type: CONKIT-E/CH-LC

Specifications subject to change without notice. | USA 140916 | Page 16 of 16
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: [phone] & (888) GO.INTEC | inteccontrols.com
DT5-1125 V1 – UserManual
PolyGard®is a registered trademark of MSR-Electronic GmbH | GAADT231125_E
11 Part Disposal
Since August 2005 there are EC-wide directives defined in the EC Directive 2002/96/EC and in national codes
concerning the waste electrical and electronic equipment and also regarding this device.
For private households there are special collecting and recycling possibilities. For this device isn’t registered for the
use in private households, it mustn’t be disposed this way. You can send it back to your national sales organisation
for disposal. If there are any questions concerning disposal please contact your national sales organisation.
Outside the EC, you have to consider the corresponding directives.
12 Notes and General Information
It is important to read this user manual thoroughly and clearly in order to understand the information and
instructions. The PolyGard®transmitters must be used within product specification capabilities. The appropriate
operating and maintenance instructions and recommendations must be strictly followed.
Due to on-going product development, MSR-Electronic-GmbH and INTEC Controls reserve the right to change
specifications without notice. The information contained herein is based upon data considered to be accurate.
However, no guarantee is expressed or implied regarding the accuracy of these data.
12.1 Intended Product Application
The PolyGard®NH3transmitters are designed and manufactured for control applications and air quality compliance
in commercial buildings and manufacturing plants.
12.2 Installers’ Responsibilities
It is the installer’s responsibility to ensure that all PolyGard®transmitters are installed in compliance with all national
and local codes and OSHA requirements. Installation should be implemented only by technicians familiar with
proper installation techniques and with codes, standards and proper safety procedures for control installations and
the latest edition of the National Electrical Code (ANSI/NFPA70). It is also essential to follow strictly all instructions
as provided in the user manual.
12.3 Maintenance
It is recommended to check the PolyGard®transmitter regularly. Due to regular maintenance any deterioration of
performance may easily be corrected. Re-calibration and part replacement may be implemented in the field by a
qualified technician and with the appropriate tools. Alternatively, the easily removable plug-in transmitter card with
the sensor may be returned for service to INTEC Controls.
12.4 Limited Warranty
MSR-Electronic-GmbH and INTEC Controls warrant the PolyGard®transmitters for (2) years from the date of
shipment against defects in material or workmanship and 12 months normal exposure for sensor element. Should
any evidence of defects in material or workmanship occur during the warranty period, MSR-Electronic-GmbH or
INTEC Controls will repair or replace the product at their own discretion, without charge.
This warranty does not apply to units that have been altered, had attempted repair, or been subject to abuse,
accidental or otherwise. The warranty also does not apply to units in which the sensor element has been
overexposed or gas poisoned. The above warranty is in lieu of all other express warranties, obligations or liabilities.
This warranty applies only to the PolyGard®transmitters. MSR-Electronic-GmbH and INTEC Controls shall not be
liable for any incidental or consequential damages arising out of or related to the use of the PolyGard®transmitters.
If the PolyGard® transmitter needs to be returned to INTEC Controls for service, an RMA number must be obtained
prior to sending.