Genesis SHERLOCK 102, Operation Manual

Page: 40 / 53

44-00-0297 SHERLOCK 102/202 REV. 4.1 05-02-15
41
CALIBRATION KIT.
The Calibration Kit contains the following items:
Carrying Case Flow Regulating Valve
Calibration Chamber 2.5 ft Vinyl Tubing
Calibration Gas - Zero Level
Calibration Gas - Span Gas.
Flow Regulating Valve. The Flow Regulating Valve permits
the sensor chamber or the IR Sensor chamber to be fi lled at a
constant rate.
Calibration Chamber. The Calibration Chamber allows the
CMOS and Oxygen sensors to be sealed into a controlled envi-
ronment.
2.5 ft Vinyl Tubing. To connect the valve to either the Calibra-
tion Chamber or to the IR Sensor Chamber.
Calibration Gas - Zero Level. 79.1% Nitrogen/20.9% Oxygen,
34 L gas, compressed.
Calibration Gas - Span Gas.
Refrigerant Sensor-Measured concentration of refrigerant
gas and N2/O2.
Oxygen Sensor - 23% Nitrogen/17% Oxygen, 34 L gas,
compressed.
Measured Gas Calibration IR Sensor (Optional)
Equipment Required.
One Sherlock Refrigerant Sensor Calibration and Test Kit :
The measured gas calibration procedure may be used as a double
check of sensor accuracy and only needs to be done if there are
questions of whether or not the sensor is working. It is not nec-
essary to use measured gas to calibrate the infrared sensor. If
you choose to, you can perform the calibration procedure out-
lined in the calibration test kit. Since the infrared sensor does
not fi t in the calibration chamber, a plastic bag or other airtight
container must be used. The reading on the monitor will be off
due to dilution of the gas with the air still in the container.
Another procedure involves changing the air currents drastically
inside the sensing chamber, so please use the procedure listed
below only as a test. Since the gas is forced into the sensor the
reading will not be as accurate as a normal reading. At the fac-
tory we allow for normal airfl ow that would occur in a real leak
when we calibrate the sensor and set the zero level. So there will
be an artifi cial reading between the zero gas and measured gas
because of the unusual air currents involved.
1) Place the Plastic tubing that comes with the calibration kit
over the inlet valve on the top right of the sensing tube and
connect the other end to the calibration gas canister regulator.
2) Run the 20.9% O2 gas into the sensor for about 5 minutes
and wait for the reading to settle. Press the push button on the
sensor right above the dipswitch for 10 seconds. This will be the
artifi cial zero level.
3) Next run the measured refrigerant gas into the sensor for
about 5 minutes. The difference between the artifi cial measured
gas reading and the artifi cial zero level reading should be close
to the measured gas concentration however the way the gas is
pumped in will create errors in the accuracy of the reading.
CALIBRATION
O
N
1
2
3
4
5
6
7
8
1
POT6
P
O
T
5
P
O
T
5
POT3
POT2
POT7
P
O
T
1
2 3
4
P1 + COMM -
J1
P3
1
3
3
J2
1
J6
1
3
J3
1 3
J4
1 3
2
Connector P1
Sherlock 3-Wire 4 - 20 MilliAmp
P1-1 Signal Output MA output
P1-2 Ground MA return
P1-3 +12V DC in V+ in (+12V DC)
P1-4 Ground(Not Used) V return
SW1 P7 OFF = ROOM TEMP MODEL
ON = LOW TEMP (< 30 F) MODEL
SW1 P6 OFF = NORMAL
ON = FACTORY CALIBRATION
DEFAULT SETTING
SW1 P5 OFF = NORMAL
ON FIXED 200 PPM OUTPUT
FOR WIRING CHECK
SW1 P4 OFF = AUTO LONG TERM OFFSET
COMPENSATION
ON = DISABLED
SW1 P1-P3 = COMMUNICATION ADDRESS
FOR NETWORKING
@
( J6 FACTORY PRE-SET TO
3-WIRE OUTPUT)
4 - 20MA MAPPING
(PPM = PARTS PER MILLION)
MA = PPM * 0.01551 + 4.00
PPM OUTPUT MA
0
4.0MA
100 5.55MA
200 7.10MA
250 7.88MA
500 11.76MA
800 16.41MA
1 3 = SWITCH SETTING AT 1
J6 SW1 P8
ON 4 - 20MA 1 3
OUTPUT
SHERLOCK
3-WIRE
1 3 OFF
DANGER: DO NOT SHORT
JUMPER BLOCKS. IT COULD
DAMAGE THE SENSOR
GAS
DETECTION
CHAMBER
ON = NORMAL
OFF = CALL FACTORY
FLASHING = TEMP OUT
OF RANGE
CALIBRATION
AIR INPORT
KEEP CAP ON
AT ALL TIMES
OFF = NORMAL
ON = FCTY SET
FLASHING = ERROR
CALL FACTORY
CALIBRATION
PUSH BUTTON
SWITCH J6
ON
1 2 3 4 5 6 7 8
1
2
3
4
P1
SIG OUT
STATUS
CALIB
.
GENESIS INT’L INC 01-0224
VER .1.0 IROUTB 07-25-02
CALIBRATION
PUSH BUTTON
ARTIFICIAL 200 PPM
PUSH BUTTON
CALIBRATION LED
LED 2 STATUS LED
LED 1
LOOSEN SCREW AND SLIDE LOWER PLATE DOWN TO ACCESS
WIRING AND CALIBRATION BUTTON AND OTHER FEATURES
FIGURE 7
DIPSWITCHES
Connector P1
Sherlock 3-Wire 4 - 20 MilliAmp
P1-4 Ground V return
P1-3 +12V DC in V+in(10-36VDC)
P1-2 Ground MA return
P1-1 Signal Output MA output
(Not Used)
GAS CALIBRATION
INTAKE