PRECISION DIGITAL THERMOMETER

5885 Precision Digital Thermometer.
The 5885 Thermometer Series is by any standard, an impressive range of precision
Digital Thermometers. 
All models in the series have the same accuracy of 0.01°C and resolution of 0.001°C  with options and features available to suit most applications and budgets.

Accuracy 0.01 °C
Resolution 0.001 °C
3 Models and many options
Linearized for 10 thermocouple and 5 PRT types
Displays temperature readings plus mV / Ohmic values
Memory stores up to 4000 readings
Automatic current reversal for RTD measurements
Half power measurement for RTD's to assess self heating effect

Entry of probe calibration data for enhanced accuracy 2 channel measurement A, B, A-B, plus Math 
functions.
Digital calibration with pass code entry, RTD & Thermocouple Inputs, RS232 / IEEE-488 Interface options, Mains / rechargeable battery operation with built in charger

All three instruments have 2 Channel inputs and will display A, B or A-B on a large, backlit, LCD graphics display. The most commonly used functions are selected with dedicated front panel keys and the enhanced features by easy-to-use menus.

To ensure that the very best measurements are achieved, PRT probe characteristics may be entered and stored. The measuring current may also be reduced by x 0.707 to determine self-heating of the probe, and the measuring current may be reversed automatically, displaying the average value.

Precision Digital Thermometer Technical Data

Display

LCD Graphics Panel, 240 x 64 Dot, with LED backlight contrast control via keyboard

Inputs

Thermocouples via 4mm sockets in copper block on 19mm pitch adapter plug for direct connection of thermocouple wire.
Reference Junction Compensation -Automatic with internal sensor, or with external Pt100 probe or by manual input of value.
PRT's via 6 pin Lemo socket, also used for external RJ measurement

Data Logging

The 5885 thermometers come complete with a data logging function, enabling up to 4000 single channel (2000 dual channel) readings to be stored together with a date and time stamp. 
The stored values can be recalled to the instrument display and scrolled through using the keyboard, alternatively these values may be down loaded to a PC file or printer.

Limits

The limit function is included in all instruments permitting Hi and Lo limits to be set from the front panel, a visual and audible alarm will be given if these limits are exceeded. For those wishing to have an output for their limits, a factory fitted option is available giving potential free contacts.

Filter

Selectable filtering of n samples displaying mean values, Max/Min values, and standard deviations.

Math

Displays A as % of B
Null A and B
Null A-B
Manually offset A and B

Analogue Output

This is a factory fitted option comprising of a single BNC socket fitted to the rear panel. 
The function is as per the main value display and is scaled I mV/°C. A 12 bit D/A converter is used and the resolution is 0.5°C

Scanner Option

The scanner option may be fitted to a slot in the rear panel, two types are available for thermocouple or RTD Scanning. The scanner port will also support an external scanner box.

Interfaces

The interface cards are available as an option, only one card may be fitted.
RS232 To specification ANS/EIA/TIA/-232-E-1991 
RS485 Similar to RS232 TXD & RXD only -0 XON/XOFF protocol Addressable
IEEE-488 Conform to ANS1-IEEE Std 488.1 -1987
The interface performs the following functions:
SHI, AHI, T5, TEO, L3, LEO, SR1. RL1, PPO, DC1, DT1, Co, E2.
The interface can also be set to a talk only mode to permit stand alone printer output.

Calibration
Digital, security code protected

Battery
Sealed lead acid, rechargeable cell giving approximately 8 hours continuous operation. Internal battery charger

Mains supply
100 / 120 / 220 / 240 volts +10% - 13%,  47. .63Hz max. 40VA

Weight
5.5Kg approx.

EMC
Complies with Generic Standard  EN5081-1 & EN5082-1

Working temperature
0°C - 40°C;  Relative Humidity 80% max. Non condensing

Storage temperature
-20°C to+50°C

Dimensions
219 x 315 x 110.3mm 

1/2 19" rack, 2.5U high

Safety
EC1010-1 (Amend.1)

Safety Class 1

RTD Types linearized to ITS-90 (Model 5885 & 5885A Pt. 100 only)

Conforms to lEC751/BS1904/DIN43760
Pt100 Nominal R₀ = 100 and “Alpha” = 0.00385 plus “High Alpha” probes 0.003916