44-00-0297 SHERLOCK102/202 REV. 4.1 05-02-15
15
OVERVIEW
The SHERLOCK VENTLINE REFRIGERANT GAS SENSOR
(VENTLINE) was designed to detect the presence of high con-
centrations of refrigerant gas in the vent lines of refrigeration
systems. The sensor warns the user to investigate for possible
leaks in relief valve or to check the systems for overpressure.
The sensor is is designed to be installed in refrigeraton vent lines
and is supplied in a NEMA 3R rated housing with 3/4” NPT
female connections.
There are three models of the Ventline Sensor, one for CFC/
HCFC gases, one for HFC gases, and one for Ammonia. The
Ventline Sensor should be utilized as a signal source for the
SHERLOCK 4-SERIES refrigerant gas monitoring system.
Typical applications include:
· Monitoring of HVAC and refrigeration system relief lines
DIMENSIONS 4.3 x 3.5 x 4.0, 109 x 89 x 102
Inches (mm)
ENVIRONMENT -25 - 120 °F (-30 - 50 °C),
0 - 95% RH non condensing
POWER INPUT 12V DC, 250mA
OUTPUT 0.5 - 5 VDC
DETECTION RANGE 20 to 1000 ppm (gas dependent)
SENSITIVITY 10 % of full scale reading.
CALIBRATION Every 6 Months
WARM-UP TIME Readings will stabilize After 3
hours.
LIFE EXPECTANCY 3 to 5 years in normal
environments
NOTE: The Ventline Sensor is calibrated in the same way as the
solid State CMOS sensor on the previous page.
OVERVIEW
The SHERLOCK High Pressure Ventline Refrigerant Gas Sensor
was designed to detect the presence of high concentrations of
refrigerant gas in the vent lines of refrigeration systems. The
sensor warns the user to investigate for possible leaks in relief
valve or to check the systems for overpressure. The sensor is is
designed to be installed in refrigeraton vent lines and is supplied
in a NEMA 3R rated housing with a 1 1/4” NPT female connec-
tion. The Ventline Sensor can be utilized as a signal source for
the SHERLOCK 4-Series Refrigerant Gas Monitoring System.
DIMENSIONS Inches (mm)
ENCLOSURE NEMA 3R
6.5 x 4.5 x 5.0 (165 x 114 x 127)
SENSOR HEAD Nickel Plate
4.0 x 2.0 x 2.25 (102 x 51 x 57)
Sensor Opening, 1.25 (31.75) NPT,
Female Connection
CABLE 36 (914) Belden #8443, 3-22 AWG
ENVIRONMENT -25 to 120 °F (-30 to 50 °C),
0 to 95 % RH non condensing
POWER INPUT 12VDC, 250 mAmps
OUTPUT SIGNAL 0.5 to 5VDC (Sherlock)
DETECTION RANGE 30 to 300 ppm (gas dependent)
SENSITIVITY 10 % of full scale reading.
MAX. PRESSURE 300 psi
CALIBRATION Every 6 Months
WARM-UP TIME Readings will stabilize after 3
hours.
LIFE EXPECTANCY 3 to 5 years in normal
environments
NOTE: The Ventline Sensor is calibrated in the same way as
the solid State CMOS sensor on the previous page.
VENTLINE SENSORS
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