Martel Electronics QM110T - Manual (Page 2)

Specifications liable to change without prior warning EMT 1900 Issue 6 September/2001 M.C. Applies to QM 110T
RED RED
RED
S1
S1
S2
Leave S1 open to display internal sensor temperature in °C.
Close S1 to display external Sensor temperature in °C.
Leave S1 open to display internal sensor temperature.
Leave S2 open to display temperature in °C.
Close S2 to display temperature in °F.
Close S1 to display external Sensor temperature.
Displaying ambient temperature in °C,
using the module's internal temperature sensor.
BLACK BLACK
BLACK
ORANGE
ORANGE
YELLOW
0V 0V
0V
+4 to +28V d.c. +4 to +28V d.c.
+4 to +28V d.c.
APPLICATIONS
0. BLACK 0V Negative supply voltage to the module.
1. BROWN NTC Connection for external 10k NTC sensor.
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.
Ω
BROWN
BROWN
NTC
R =10k
=3977
25°C
C
Ω
β
2 5 − 8 5 °
+0.75%
NTC
R =10k
=3977
25°C
C
Ω
β
2 5 − 8 5 °
+0.75%
°C °C
°F
Martel Electronics, Corp. P.O. Box 770 Londonderry, NH 03053
Toll Free: (800) 821-0023 Phone: (603) 434-1433 Fax: (603) 434-1653