Martel Electronics QM110T User Manual
QM 110T SingleHoleMountingThermometer
QM110T isaneasytomountLCDdigitalpanelmeter.
external sensor (not supplied). The module uses NTC temperature sensors to ensure high accuracy over a wide temperature range.
the user needonly drill a single 5.5mm/ hole in thepanel. The moduleis fitted to the panelbylocating its screw threadedstud through the hole, fittingthe
7
"
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The module canmeasure ambient temperature via a built-in sensor and outside temperature via an
To mount the module,
washer and tightening the nut provided. The module's connecting wirespass through the hollow stud into the target application, where they can be easily
plugged or solderedinto place.
A rubber sealisincluded, providing splashproof protectionfor the unit whenfitted tothe meter during installation.
Single Hole Mounting
4 Measurement Ranges
12.5mm / 0.5" LCD Digit Height
Compatible with 10k NTC Sensors
Ω
°C
5-Wire Connection
Splashproof
Shown Actual Size
Stock Number
EasyMountingThermometerQM 110T
Specification Min. Typ. Max. Unit
Seal
THERMOMETER
9.0
(0.35)
Panel
5 Wires - 30cm (12.0)
Nut
Washer
Measurement
ranges °F range +14 +122 °F
Resolution
Resolution +140 to +170°C 2 (4) °C (°F)
Accuracy* °C range 1 °C (±2 count)
Sample rate 3 sample/sec
Operating temperature range -10 +50 °C
Supply voltage** 4 28 V d.c.
°C range -10 +50 °C
°C range -20 +220 °C
°F range -4 +428 °F
Internal Sensor
(Internal Sensor)
(Internal Sensor)
(External Sensor)
(External Sensor)
0.5 (1) °C (°F)
-20 to +140°C 1 (2) °C (°F)
External Sensor
+170 to +220°C 5 (10) °C (°F)
(Both Sensors)
°F range 2 °F (±4 count)
(Both Sensors)
* Using external NTC sensor with 10k @ 25°C and a 25 to 85°C Beta value of 3977, for example:
BC Components 2322-640-73103. The module may require recalibration.
To ensure maximum accuracy, recalibrate periodically. Calibrate the module at top end of
measurement range.
** Do not apply more than 28V, as this may damage the meter.
Ω
SAFETY
AstheNTCtemperaturesensorisapassivedevice,novoltagesshouldbeappliedtotheinputterminals.Theusermustensurethatthe
incorporationofthemeterintotheuser’sequipmentconformstotherelevantsectionsofBSEN61010(SafetyRequirementsforElectricalEquipmentfor
Measuring,ControlandLaboratoryUse).
DIMENSIONS All dimensions in mm (inches)
°C
21.75 (0.85)
5.00
(0.20)
Underrange display
Overrange display
FITTINGTHEQM 110T
Drill a 5.5mm / " hole in the panel.
the panel by passing its screw threaded stud and the wires through the hole, fitting the
washer and tighteningthe nutprovided. Take care not totrap anyof the connectingwires.
Do
not overtighten thenut asthis may damage themeter.
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Fit seal to the rear of the module. Fit the module to
10.70
(0.42)
10.70
(0.42)
21.40 (0.84)
43.50 (1.71)
REAR VIEW
CAL EXT
CAL INT
21.75 (0.85)
Module thickness: 5.5mm (0.22")
Martel Electronics, Corp. P.O. Box 770 Londonderry, NH 03053
Toll Free: (800) 821-0023 Phone: (603) 434-1433 Fax: (603) 434-1653
0. BLACK 0V Negative supply voltage to the module.
1. BROWN NTC Connection for external 10k NTC sensor.
Ω
2. RED V+ Positive supply voltage to the module.
3. ORANGE INT/EXT Leave floating to display internal sensor temperature.
Connect to 0V to display external sensor temperature.
4. YELLOW °C/°F Leave floating to select °C measurement range.
Connect to 0V to select °F measurement range.
APPLICATIONS
+4 to +28V d.c. +4 to +28V d.c.
RED RED
BLACK BLACK
0V 0V
Displaying ambient temperature in °C,
using the module's internal temperature sensor.
BROWN
NTC
25°C
2 5 −8 5 °
=3977
C
Ω
+0.75%
R =10k
β
NTC
R =10k
25°C
β
=3977
2 5 −8 5 °
C
Ω
RED
BLACK
BROWN
°C°C
+0.75%
Leave S1 open to display internal sensor temperature in °C.
Close S1 to display external Sensor temperature in °C.
+4 to +28V d.c.
YELLOW
°F
ORANGE
S2
S1
0V
ORANGE
S1
Leave S1 open to display internal sensor temperature.
Close S1 to display external Sensor temperature.
Leave S2 open to display temperature in °C.
Close S2 to display temperature in °F.
SpecificationsliabletochangewithoutpriorwarningEMT1900Issue6September/2001M.C.AppliestoQM 110T
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