Martel Electronics DTM995 - Manual (Page 2)

PIN FUNCTIONS
ROOM TEMPERATURE METER
1. V+ Positive power supply connection.
2. V- Negative power supply connection.
3. T+ Connection for positive (Ni-CR) part of thermocouple Green (Brown).
4. T- Connection for negative (Ni-AL) part of thermocouple White (Blue).
5. LP+ Positive power supply for backlighting.
6. LP- Negative power supply for backlighting.
- When connecting thermocouples, ensure that the wires are carefully cleaned and are connected directly to the module and not to some
intermediate connector other than a proper K type thermocouple extension cable.
To use the internal temperature sensor, simply apply a short circuit to T+/T- (LK2).
Note
VARIOUS OPERATING MODES
BACKLIGHTING
ON-BOARD LINKS: In order to quickly and easily change operating modes for
different applications, the meter has several on-board links. They are designed
to be easily opened (cut) or shorted (soldered).
Ensure thermocouple probes are isolated.
There are two ways to power the LED backlight. Either use a 5V (±10%) supply on LP+/LP- or use the internal meter 5V supply. If the internal
supply is used, the power supply voltage is limited to 7.5 - 15V D.C.
Normally
SHORT
Cut to OPEN
Normally
OPEN
Solder to
SHORT
PANEL FITTING
1 1 1
2 2 2
4 4 4
6
0V
3 3 3
3 3 3
5
+5V LP+
LP-
7.5 - 24V d.c. 7.5 - 15V d.c. 7.5 - 15V d.c.
V+ V+ V+
T+ T+ T+
T- T- T-
0V 0V 0V
0V 0V 0V
k-type
thermocouple
k-type
thermocouple
6
LP-
Wire
Link
With external backlight supply. With internal (continuous) backlight
supply. Short link 3. With internal (switched) backlight
supply. Short link 3.
THERMOCOUPLE MEASUREMENT ROOM TEMPERATURE
MEASUREMENT
Specifications liable to change without prior warning DTM 995 Issue 9 August/2002 M.C. Applies to DTM 995/2
6
LP-
-
+
Note: For thermocouple colour coding, refer to FAQ on our website.
-
+
LASCAR ELECTRONICS LTD.
MODULE HOUSE, WHITEPARISH,
WILTSHIRE SP5 2SJ UK
TEL: +44 (0)1794 884567 FAX: +44 (0)1794 884616
E-mail: [email protected]
LASCAR ELECTRONICS (HK) LIMITED
FLAT C, 5/FL., LUCKY FTY. bldg., 63-65 HUNG TO ROAD
KWUN TONG, KOWLOON, HONG KONG
TEL: +852 2797 3219 FAX: +852 2343 6187
E-mail: [email protected]
LASCAR ELECTRONICS INC.
3750 West 26th Street,
Erie, PA 16506 USA
TEL: +1 (814) 835 0621 FAX: +1 (814) 838 8141
E-mail: [email protected]
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.martelcorp.com