Quantum DCT150M-W User manual

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
THE DCT150M-W DIGITEMP DIGITAL THERMOMETER
FOR TANKS AND TANK CONTAINERS
INSTRUCTION MANUAL
The DigiTemp DCT150M-W is a battery powered digital thermometer for tanker and tank
containers, which provides reliable, economic and accurate temperature monitoring for a wide
range of industrial applications in hazardous process areas, where potentially explosive
atmospheres may be present. The DCT150M-W has a wide temperature operating range from -
50°C to +150°C and a guaranteed battery life of 6 years with no maintenance. The DCT150M-W
wireless thermometer provides real time updates of temperature readings to communication
gateways including satellite systems operating in the IEEE 802.15.4 frequency range. The
DigiTemp DCT150M-W is housed in a robust glass reinforced nylon case with a fully integrated
sealed polycarbonate face which is waterproof to IP67 and which eliminates surface
electrochemical corrosion problems. The DCT150M-W is suitable for hostile environments
without additional protection.
iNSTALLATION REQUIREMENTS
Prior to installing this thermometer, these instructions should be fully read. Failure to do so could
result in permanent damage to the unit. Particular attention should be given to the following
points:-
 The Near Field Communication function of this device must not be used in a hazardous area
(safe area use only).
 This equipment shall not be exposed to strong electromagnetic fields exceeding 1A/m rms or
3V/m rms when located in a hazardous area These values are maximum limits and may be
limited further in accordance with the Canadian Electrical Code or the National Electrical Code
or IEC/EN 60079-14, as well as local requirements (as applicable).
 The installer and user must take appropriate measures to avoid accumulation of electrostatic
charge on the non-conductive enclosure surface. Clean only with a damp cloth.
 The equipment enclosure must be sufficiently thermally isolated from hot or cold process
vessels that its local ambient remains within the specified ambient temperature range.
 The equipment must not be allowed to become immersed in dust.

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
 The temperature probe is an isolated metal part with capacitance of 75pF. The installer must
determine suitability for the application.
 This transmitter has been approved for use a separation distance of at least 20 cm from all
persons.
No changes or modifications to the product can be made unless they have been expressly
approved by Quantum Cryogenics as this could void the user's authority to operate the
equipment
.
ATEX Hazardous Area Compatibility
Ensure that the gauge is suitable for use in the environment of the hazardous zone. This should be
done by reference to the ATEX code of the DigiTemp which is also marked on the face of the
instrument and stated on the certificate.
II 2 GD Ex ib IIC T4...T3 Gb EX ib IIIC T135°C....T184°C Db -35°C ≤ Ta ≤ +60°C
Permitted process temperatures are as follows:-
Process Temperature Range
For Gas Atmospheres
Applicable Temperature Class
-50°C to +105ºC T4
-50°C to +150ºC T3
Process Temperature Range
For Dust Atmospheres
Applicable Temperature Marking
-50°C to +101ºC T135°C
-50°C to +150ºC T184°C

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
HAZLOC Hazardous Area Compatibility
Ensure that the gauge is suitable for use in the environment of the hazardous zone. This should be
done by reference to the HAZLOC code of the DigiTemp which is also marked on the face of the
instrument and stated on the certificate.
Class I, II, III, Div 2, Groups A-D, F-G, Nonincendive/ Non incendaire
Class I, Zone 1, AEx ib IIC T4/T3 Gb, Zone 21, AEx ib IIIC T135°C /T184°C Db,
Ex ib IIC T4/T3 Gb
Ex ib IIIC T135°C /T184°C Db
-35°C ≤ Ta ≤ +60°C
Control drawing-A3-00614, Rev08
Max. Process
Temperature
(Gas Atmospheres)
Temperature
Class
Max. Process
Temperature
(Dust Atmospheres)
Temperature
Class
-50°C to +105°C T4 -50°C to +101°C T135°C
-50°C to +150°C T3 -50°C to +150°C T184°C
In the event that the equipment is to be exposed to any unusual external effects or to aggressive
substances please contact Quantum Production Ltd for further advice
INSTALLATION
Installation should only be undertaken by qualified personnel familiar with safety practices and
standards relating to intrinsically safe electrical equipment.
OPERATING INSTRUCTIONS
The DCT150M-W samples the temperature measured at the sensor once every minute. In practice,
due to the slow change in the temperature of the wall and the contents of the tank being measured,
the temperature is unlikely to change by more than a few degrees between samples. If, however, the
sensor is removed from the tank and subjected to extremes of temperature change such as plunging
into hot oil, for example, it is likely that the temperature seen will change by a greater degree at the
next sample occasion, due to the fact that the temperature shown on the display is fixed between
samples. The DCT150M is functioning perfectly correctly and merely indicating the actual temperature
of the sensor at one minute intervals.
As with any thermometer, it should be noted that it takes time for the sensor to reach the
temperature of the product measured and this should be taken into account. The DCT150M-W is
wireless enabled allowing wireless transmission to compatible remote communication devices. This

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
allows continuous transmission of the sensor temperature and battery life to the communication
device without requirement for cabling. An NFC device is fitted to the unit that can be used to switch
on the wireless device, allowing the units to be purchased and stored without depleting the battery
life. The NFC can also be used with smart phone applications for changing the display from C to F and
also for logging of data which can be downloaded to a smart phone. If interfacing with a wireless
system please contact Quantum Production for further details.
The near field communication of this device must not be used in a hazardous area and it should also
be noted that the equipment should not be exposed to strong electromagnetic fields exceeding 1A/m
rms or 3V/m rms when located in a hazardous area.
This transmitter has been approved for use a separation distance of at least 20 cm from all persons.
The installer and user must take measures to avoid accumulation of static charge on the non-
conductive enclosure surface. Please refer to instructions in cleaning section below.
No changes or modifications to the product can be made unless they have been expressly
approved by Quantum Cryogenics as this could void the user's authority to operate the
equipment.
MOUNTING THE SENSOR
In order to monitor the authentic temperature of the tank and its contents, good thermal contact
must be made between the temperature sensor and the tank. It is therefore important to mount the
sensor in an effective manner to achieve this.
The sensor is housed in a stainless steel tube of diameter approximately 6mm and length 50mm at the
end of a flexible lead. The temperature probe is an isolated metal part with capacitance of 75pF.
Isolated metal parts can accumulate electrostatic charge, which can potentially be sufficient to cause
an ignition of flammable atmospheres. The capacitance is a measure of how much charge they could
store. The user/installer must determine whether this would present a hazard in the installed
configuration. For example, if the isolated part is installed in an area with a high, dust laden airflow, it
is likely that it could accumulate a significant charge. If it is earthed to a metal frame, however, and
under cladding without significant airflow, then it would be less likely to accumulate a charge.

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
1. Surface Mounting
The sensor housing may be fixed to the outer surface of the tank in either of the ways described
below:
i) The sensor housing may be fixed to the outer surface of the tank by means of stainless steel
saddle clips (see Fig 1 below). The saddle clips should be of a size to allow the sensor housing to
slide into position, after the clips have been welded to the tank, without using undue force,
and then be held firmly in position by the use of a 'setting' high thermal conductivity silicone
sealant.
Welds
Tank Surface
Saddle Clips
Sensor Housing
Flexible Lead
Fig. 1
ii) Alternatively, the sensor housing may be fixed to the outside surface of the tank by inserting it
into a stainless steel tube of suitable diameter which has been pre-welded to the tank surface
(see Fig.2 below). The tube should be of such a size that the sensor housing can easily slide into
it without the use of undue force and then be held in position by the use of a 'setting' high
thermal conductivity sealant which is suitable for use in the environment of the hazardous
zone.
Welds
Tank Surface
Stainless Steel Tube
Sensor Housing
Flexible Lead
Fig 2
NOTE
NEVER weld clips or tube in place with sensor already fitted

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
2. Thermowell or Thermal Pocket Mounting
The sensor can also be mounted in a Thermowell or Thermal Pocket a tube welded to the tank surface
and projecting in to the tank.) The internal diameter of the tube projecting in to the tank must be such
that the sensor housing slides in to it easily. In fitting the sensor housing in to the tube, thermal
contact can be made by use of a 'non-setting' silicone around the sensor housing and then (making
sure that there are no sharp edges to damage the sensor cable), by carefully clipping the sensor lead
to the tank surface.
FIXING OF THE CASE
The case dimensions of the DCT150M Digital Tank Thermometer are shown in Fig 3 below. The case is
designed to be 'flush fitted' in to a circular hole of diameter 4 inches (122 mm.) in the outer skin of the
tank and to be fixed in position by means of rivets or screws. Six fixing holes (Ø5 mm) are provided
around the fixing flange of the unit on a PCD of 135mm.
The thermometer flange should be sealed to the outer skin of the tank by means of a 'setting' silicone
sealant that is suitable for use in the environment of the hazardous zone.
Care must be taken when installing to ensure that the enclosure is sufficiently thermally insulated
from the surface of the tank so that its local ambient temperature remains between -35°C and 60°C.
The equipment must not be allowed to become immersed in dust during installation or ongoing
operation. Cleaning should only be undertaken with a damp cloth. No other solvents should be used.
WARNING
The flange of the thermometer is not curved. If the flange is to be fitted to
a curved surface, suitable spacers MUST be used to avoid excess stress

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
Fig 3
THE FLEXIBLE SENSOR LEAD - _ PRECAUTIONS
The flexible sensor lead between the sensor housing and the case of the thermometer is NOT ordinary
cable. The sensor has to sense temperatures up to +150°C and down to -50°C and the cable has to
withstand such temperatures. The cable insulation is a special high temperature material and, when
installing, great care must be taken not to damage it.
When fitting the sensor, pay particular attention to the following points:-
1. Do not pull, tug or stretch the sensor cable and ensure that the lead is not resting or
snagged against a sharp edge or trapped between two surfaces
2
If the lead is too long, it can be coiled and held together by a high temperature tie
-
wrap,
making sure that the tie wrap used is kept WELL AWAY FROM THE HOT TANK SURFACE.
3. After fitting the sensor, make sure that all of the space above the sensor (between the
sensor and the outside shell of the tank) is fully thermally insulated.
4. The maximum amount of insulation must be fitted around the sensor between the tank
and the outer skin to ensure that the sensor is not losing heat to the atmosphere

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
PRODUCT LABELLING
Fig 4
CLEANING
Care must be taken to remove the risk of discharges due to static electricity, so cleaning of the flange
and front face of the thermometer should only be undertaken by wiping with a damp cloth. It is not
good practice to clean the face of the unit using a dry cloth. Strong solvents should not be used to
clean the flange and front face.
MAINTENANCE
The DCT150M-W does not require any user maintenance other than cleaning as indicated above. The
face of the unit is permanently sealed to the enclosure and should not be removed. Refurbishment
and replacement batteries can be undertaken by returning the unit to Quantum Production Ltd
WARRANTY
The DCT150M-W is guaranteed to be free of manufacturing defects for a period of six years from the
date of purchase. To obtain service under this warranty, the instrument should be returned to
Quantum Production Ltd. It should be noted that if the DCT150M-W is used in a manner that has not
been specified in these instructions, the protection provided by the manufacturer may be impaired.

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
SPECIFICATIONS
Range -50°C to +150°C / 58ºF to 302ºF
Sensor PT1000
Accuracy °C to +100°C typically 0.9°C +/- one digit
150°C typically 2.0°C +/- one digit
50 °C typically 1.0°C +/- one digit
Sample Time Variable - 60 seconds provides typical 7 year life
Lead Length 1 metre (customised lengths up to 15m available upon request)
Display 4 Digits, 7 segment LCD (optional Fahrenheit °F configuration)
Resolution 1°C
Dimensions ø150 × 40 mm (rear cut out ø100 mm)
Fittings 6 fixing holes (ø5 mm) equi-spaced on a 135 mm PCD
Enclosure Glass fibre reinforced nylon with fully integrated sealed polycarbonate front face.
Sensor enclosed in ø6 mm x 50 mm sheath stainless steel.
Ingress Protection IP67
Serial Number Displayed on front face with year/month of manufacture in format DCT150M-W-
YR/M/SERIAL NUMBER
Weight 500g
Energy Battery Lithium Thionyl Chloride
Nominal Battery Voltage 3.6V(Nom), (3.9Vdc SC)
Battery Capacity 4.8Ah
Battery Certification UN38.3 Certified
Environmental Operating Temperature -50°C ...150°C
Atex/HAZLOC Ambient Temperature -35°C ... 60°C
IEEE 802.15.4 Frequency Range 2405 MHz...2480 MHz
Environment RoHS WEE/MP3538PZ/SCH

Head Office: Engineering:
Unit B, Cranmere Court Unit 13 Langley Business Court
Okehampton Devon Worlds End Newbury
EX20 1UE UK RG20 8RY
Tel: [phone] Fax: [phone]
Email: [email protected] Web Site: www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
ATEX Cert No: CML 21ATEX2784X-Issue 0 2014/34/EU
II 2 GD
Ex ib IIC T4...T3 Gb
Ex ib IIIC T135°C....T184°C Db
UKEX Cert No CML 21UKEX2747X-Issue 0 UKSI 2016 No. 1107(as amended)
II 2 GD
EN IEC60079-0:2018/EN60079-11:2012
Ex ib IIC T4...T3 Gb
Ex ib IIIC T135°C....T184°C Db
IECEx Cert no ECEx CML 21.0090X-Issue 0 EN IEC 60079-0:2017/EN60079-11:2011
Ex ib IIC T4...T3 Gb
Ex ib IIIC T135°C....T184°C Db
HAZLOC E115327 IEC/EN/UL/CSA C22.2 no. 60079-0
IEC/EN/UL/CSA C22.2 no. 60079-11
CSA C22.2 no. 213 / UL 121201
UL/CSA C22.2 no. 61010-1
Class I, II, III, Div 2, Gps A-D, FG –
Nonincendive / Non incendiaire
Class I, Zone 1, AEx ib IIC T4/T3 Gb,
Zone 21, AEx ib IIIC T135°C/T184°C Db
Ex ib IIC T4/T3 Gb,
Ex ib IIIC T135°C/T184°C Db
EMC ETSI 301 489 EN 55024
FCC FCC ID 2A2HPDCT150M-W
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
ISED HVIN DCT1509.2.6/RF1060.2.6
Certification Number IC:27472-DCT150MW