Specification :

Specifications
Data Log Functions
Measure functions: Voltage, current, resistance, frequency, temperature, pressure
Reading rate: 1, 2, 5, 10, 20, 30, or 60 readings/ minute
Maximum record length: 8000 readings ( 7980 for 30 or 60 readings/ minute)
Ramp Functions
Source functions: Voltage, current, resistance, frequency, temperature
Rate: 4 steps/ second
Trip detect: Continuity or voltage ( continuity detection not available when sourcing current)
Loop Power Function
Voltage: Selectable, 24 V or 28 V
Accuracy: 5%
Maximum current: 22 mA, short circuit protected
Maximum input voltage: 30 V DC
Step Functions
Source Functions Voltage, current, resistance, frequency, temperature
Manual Step Selectable step, change with arrow buttons
Autostep Fully programmable for function, start delay, stepvalue, time per step, repeat
Environmental Specifications
Operating Temperature
-10° C to + 50° C
-20° C to + 50° C *
Storage Temperature
-20° C to + 60° C
Dust/ water resistance
Meets IP52, IEC 529
Operating Altitude
2800 m
Note
* Except frequency and AC
Safety Specifications
Agency Approvals
CAN/ CSA C22.2 No 1010.1-92, ASNI/ ISA S82.01-1994, UL3111, and EN610-1: 1993
Mechanical & General Specifications
Size
130 x 236 x 61 mm
Weight
1.4 kg
Batteries
NiCd: 7.2V, 1.7 Ah
Battery Life
~ 8 hours typical
Battery Replacement
Via snap-shut door without opening calibrator; no tools required
Side port connections
Pressure module connector
RS-232 connector for PC interface cable
Connection for optional battery eliminator
Data storage capacity
1 week of calibration results
90 day specifications
The standard specification intervals for the 743B is 1 and 2 years.
Typical 90 day measurement and source accuracy can be estimated by
dividing the one year " % of reading" or " % of output" specifications by 2.
Floor specifications, expressed as " % of full scale" or
" counts" or " ohms" remain constant