Martel Electronics QM120ET - Manual

DIMENSIONS
All dimensions in mm (inches)
FITTING THE Hour Meter
Drill a 5.5mm / " hole in the panel. Fit seal to the rear of the module.
not overtighten the nut as this may damage the meter.
7 /
32
Fit the module to
the panel by passing its screw threaded stud and the wires through the hole, fitting the
washer and spring washer and tightening the nut provided. Take care not to trap any of
the connecting wires. Do
DO NOT PULL THE WIRES AND DO NOT ALLOW SCREW TERMINALS OR OTHER
WIRES TO HANG FROM THE MODULE'S WIRES, AS THIS MAY DAMAGE THE
PRODUCT.
QM 120ET is an easy to mount LCD digital elapsed hour meter. The module features 9999.9 and 99999 hour ranges, resulting in 1/10 hour and 1 hour resolution
respectively. A leading zero blanking input is provided, allowing the user to switch off unwanted leading zeros. The module incorporates an output which
pulses high after every hour counted. This is particularly useful in applications where maintenance or inspection are required at regular time intervals. The
timer features Trip and Total ranges. The Trip range can be reset to zero. To mount the unit into a panel, the user need only drill a single 5.5mm / hole. The
module is fitted to the panel by locating its screw threaded stud through the hole, fitting the washer and tightening the nut provided. The module's 8
connecting wires pass through the hollow stud into the target application, where they can be easily connected as required. A rubber seal is included,
providing splashproof protection for the unit when fitted to the meter during installation.
" 7 /
32
Single Hole Mounting
9999.9 and 99999 Hour Ranges
9mm / 0.35" LCD Digit Height
Reset and Trip/Total Inputs
Leading Zero Blanking Input
Pulse Output Every Hour
Splashproof
QM 120 ET
Nema 4 Single Hole Mounting Elapsed Hour Meter
Shown Actual Size
REAR VIEW
CONNECTION
0 Black 0V
1 Brown 9999.9/99999
2 Red V+
3 Orange Voltage Sense
4 Yellow 1 Hr Pulse
5 Green Leading Zero Blanking
6 Blue Reset
7 Violet Trip/Total
Washer
Elapsed
Hour Meter
Panel 8 Wires - 30cm (12.0)
Nut
21.4
0
(0.84)
10.70
(0.42)
5.00
(0.20)
10.70
(0.42)
43.50 (1.71)
LCD shown in power-on self-test mode.
21.75 (0.85) 21.75 (0.85)
SAFETY
To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the module’s wires must not exceed 60Vd.c. The user must
ensure that the incorporation of the meter into equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for
Electrical Equipment for Measuring, Control and Laboratory Use).
- - - - - - - - - - - - - - - - - - - -
Stock Number
Easy Mounting Elapsed Hour Meter QM 120 ET
Specification Min. Typ. Max. Unit
Resolution Range 9999.9 0.1 Hour
Range 99999 1 Hour
Accuracy* ±2 ±6 Sec./24Hrs.
Operating temperature range 0 50 °C
Supply voltage (V+) 5 27 V d.c.
Supply current 1.5 mA
Input Low Voltage (V ** 0 0.5 V
Input High Voltage (V *** 2 V+ V
* Based upon constant running. There is potential for ±2 seconds error each time
the module is powered down and then up again. Over time, the accumulated error
approximates to zero.
** Applies to the inputs: Range, V-Sense, LZB, Reset and Trip/Total
*** Applies to V-Sense input only.
IL)
IH)
- - - - - - - - - - - - - - - - - - - -
Hrs TRIP TOTAL
Hrs TRIP TOTAL
Module thickness: 5.5mm (0.22")
9.0
(0.35)
Seal