General Technologies ST05 Oxygen Sensor Tester and Simulator User Manual
Page 2
2. TECHNICAL SPECIFICATIONS
2.1 General Specifications
Display:
20 segment LED bargraph and two
character alphanumeric display.
Sample rate:
500 samples/second.
Sensor compatibility:
Zirconia, Titanium 1 and 5 Volt Systems.
Power:
9 Volt battery, type MN1604.
Auto power off:
Automatically powers off after 3 min. of
no operation.
Battery life:
Approximately. 25 hours. (w/alkaline battery).
Test leads length:
6.5 feet (2 meters).
Dimensions:
6” x 4” x 1.5” (158 x 100 x 37 mm).
Weight:
Approximately. 14 Oz. or 406 g. (Including battery).
Included accessories: Padded hard carrying case, user’s manual, rubber holster and
1 x 9 Volt alkaline battery.
2.2 Electrical Specifications
•
The specifications below are typical at 23° C, and will vary slightly from device to device,
and with temperature. The input voltage should not exceed the indicated maximum
values, to prevent personal injury or damage to the instrument.
Page 2
Table of contents.
1. Safety Rules
Page 1
2. Technical Specifications
Page 2
2.1 General specifications
Page 2
2.2 Electrical Specifications
Page 2
3. Operation
Page 3
3.1 Instrument description
Page 3
3.2 Displays description
Page 3
3.3 Turning power on and off
Page 5
3.4 Oxygen sensor measurement
Page 5
3.5 Oxygen sensor response test
Page 7
3.6 Oxygen sensor simulation
Page 7
3.7 Additional functions
Page 8
4. Oxygen sensor information
Page 9
4.1 Oxygen sensor types
Page 9
4.2 Oxygen sensors testing
Page 11
5. Maintenance
Page 13
5.1 Battery replacement
Page 13
5.2 Cleaning
Page 14
6. Warranty
Page 14
1. SAFETY RULES
• This instrument is designed for indoor use at temperatures between 32° and 104° F
(0°C and 40°C) and altitudes up to 6500 ft (2,000 meters).
• To ensure that the instrument is used safely, follow all safety and operating instructions
in this operation manual. If the instrument is not used as described in this operation
manual, the safety features of this instrument may be impaired.
• Do not use the instrument if the instrument or test leads look damaged, or if you sus-
pect that the instrument is not operating properly.
• When using the instrument, keep away from moving parts (fan, drive belts, etc) and
hot objects (exhaust pipes, muffler , catalytic converter, etc), to avoid personal injuries
and damage to the instrument or test leads.
• Disconnect the live test lead before disconnecting the common test lead.
• Make sure power is off before cutting, desoldering or, breaking the circuit wires. Small
amounts of current can be dangerous.
• Do not connect or apply more than 42 VDC between connectors.
• At all times, to avoid electrical shock, use CAUTION when working with circuits above
60V DC or 25V AC rms. Such voltages pose a shock hazard.
• Do not operate this instrument with the battery cover off.
• To avoid electrical shock or damage to the instrument, do not exceed the specified
input limits.
Exceeding the limits listed above when using this apparatus, or not observing
the precautions listed above can expose you to physical injury and permanently
damage your instrument and parts and components of the vehicle under test.
“V Ready” and “GTC” are registered trademarks of General Technologies Corp.
Function
Input
Range
Output
Alphanumeric
Display
Bargraph
Display
Input/Outputs
Characteristics
Zn
0 to 1 V
-
0 to 9.9 ± (1.5%+1)
Cross-Count / Sec
0 to 1 Volt in
50 mv Steps
Input Impedance:
1 MΩ minimum
Input Protection:
± 42 VDC Max.
T1
-
T5
0 to 5 V
-
0 to 5 Volt in
250 mv Steps
Response
Test
0 to 1 V
-
< 100 ± 5 mS: PASS
> 100 ± 5 mS: FAIL
Input Protection:
± 42 VDC Max.
0 to 5 V
-
Simulate
RICH
0 to 1V
S e n s o r
set to
Zn or T1
1.1V
max.
Applies voltage for 4 seconds max.
with 4 seconds delay in between
simulations
With > 100Ω
sensor Impedance
Protected by current
limiting:
15 mA (Typ.)
Simulate
LEAN
0.1V
max.
Simulate
RICH
0 to 5 V
S e n s o r
set to
T5
0.25 V
max.
With > 500Ω
Sensor Impedance
Protected by current
limiting:
15 mA (Typ.)
Simulate
LEAN
5.25V
max.