Vernier LabPro - Manual (Page 76)

Revision Date: 08/02/02
LabPro Technical Manual 76
LabPro Sensor Details
Voltage Sensor
The voltage sensor is a generic sensor that you can use to read any voltage between ±10 Volts. The auto-
ID resistor contained in the sensor causes LabPro software to automatically measure voltage. No
conversion equation is loaded. The black hook should be connected to ground and the red hook to the
signal voltage.
Channels Connects to CH1, CH2, CH3, CH4 (analog channels)
Voltage range ±10 Volts
Chemical tolerance None (air only)
Pins used 1-Signal, 2-Ground, 4-auto-ID resistor
Note: It is very important that the ground connections of the analog inputs are never connected to
different potentials. These ground connections are all in common. Connecting the grounds to different
potentials may damage LabPro.
Auto-ID Sensors
LabPro contains provisions for the auto-ID sensor resistor values listed below. If needed, a conversion
equation is loaded automatically for some of the auto-ID values.
Channels 1, 2, 3 and 4
IDENT
Value
1
Sensor Type Range
2.2K Thermocouple °C -20
°
C to 1400
°
C
33K TI Voltage sensor -10 to +10 Volts
6.8K Current sensor 2 -10 to +10 Amps
3.3K Resistance sensor 1K to 100 K
Ω
22K Extra long temperature sensor for °C -50 °C to 150 °C
68K CO
2
gas sensor (PPM) 0 to 5000 ppm
100K Oxygen gas sensor (PCT) 0 to 27%
150K C V voltage sensor (V) -6 to +6 Volts
220K C V current sensor (A) -0.6 to +0.6 Amps
10K Stainless steel or TI temperature sensor 3 for °C -25
°
C to 125
°
C
15K Stainless steel or TI temperature sensor for °F -13
°
F to 257
°
F
4.7K TI Light sensor 0 to 1
1K Ex heart rate sensor (BPM) N/A
47K Voltage sensor 0 to 5 Volts
1.5K EKG N/A
1 IDENT values are resistance values in ohms (tolerance ±5%).
2 Operation 3 is a mathematical conversion of voltage to a current reading (1V=1A). There is no circuitry