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PRECISION
RESISTANCE THERMOMETRY |
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Model 5885
Precision Digital Thermometer with PRT & Thermocouple Inputs |
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5885 Precision Thermometer
The
5885 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.
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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 |
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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.
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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.
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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.
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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
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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
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| Features
of the 5885 Series |
5885A |
5885 |
| Uncertainty of RTD measurement 0.01°C |
Yes
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Yes
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| Uncertainty of TIC
measurement 0.1°C |
Yes |
N/A |
| 1 Millikelvin resolution for RTDs |
Yes |
Yes |
| 10 Millikelvin resolution for T/C |
Yes |
N/A |
| 2 measuring inputs |
Yes |
Yes |
| 10 thermocouples B, E, J,
K, L, N, R, S, T, U |
Yes |
No |
| T/C Reference Junction internal or
external |
Yes |
N/A |
| 6 RTDs, Pt25, Ptl00, Pt200, Pt500,
Ptl000, Ni100 |
No |
No |
| Pt100 |
Yes |
Yes |
| Input of RTD characteristics |
Yes |
Yes |
| Probe self-heat check |
Yes |
Yes |
| Automatic current reversal for
RTD |
Yes |
Yes |
| Suitable for 3 and 4 wire
RTD |
Yes |
Yes |
| Units °C, °F, °K, mV, Ohms |
Yes |
No
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| Units °
C, °F, °K, Ohms |
Yes |
Yes |
| Math
functions max/mm, std. deviation |
Yes |
Yes |
| Digital Filter |
Yes |
Yes |
| Data logging 4000 values |
Yes |
Yes |
| Scanner card for RTDs |
Yes |
Yes |
| Scanner card for Thermocouples |
Option |
Option |
| Analogue output |
Option |
Option |
| RS232 talk/listen |
Option |
Option |
| RS485 talk/listen |
Option |
Option |
| IEEE-488 talk/listen |
Option |
Option |
| Hi/Lo limits visual/audible display |
Yes |
Yes |
| Hi/Lo limits output relays |
Option |
Option |
| Digital calibration |
Yes |
Yes |
| Rechargeable sealed lead acid battery |
Yes |
Yes |
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Thermocouple Type Iinearized as per NIST 175,
ITS 90 Models 5885A
Types U & L to DIN 43710
| Type |
Range °C |
Resolution
°C, °F
or K |
Resolution Volts |
Uncertainty Typically |
| B |
+250 to +1000 |
0.01 |
1mV |
0.1°C |
| E |
-250 to +1000 |
0.01 |
1mV |
0.1°C |
| J |
-210 to +1200 |
0.01 |
1mV |
0.1°C |
| L |
-200 to +900 |
0.01 |
1mV |
0.1°C |
| K |
-200 to +1372 |
0.01 |
1mV |
0.1°C |
| N |
-200 to +1300 |
0.01 |
1mV |
0.1°C |
| R |
-50 to +1768 |
0.01 |
1mV |
0.1°C |
| S |
-50 to +1768 |
0.01 |
1mV |
0.1°C |
| T |
-200 to +400 |
0.01 |
1mV |
0.1°C |
| U |
-200 to +400 |
0.01 |
1mV |
0.1°C |
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
| Type |
Range °C |
Resistance |
Current |
Resolution °C,
°F or K |
Resistance |
Uncertainty Typically |
| Pt25 |
-259 to +960 |
0 to
111Ω |
2.00 mA |
0.001 |
0.001Ω |
0.01°C |
| Pt100 |
-200 to +1000 |
0 to
440Ω |
0.5 mA |
0.001 |
0.001Ω |
0.01°C |
| Pt200 |
-200 to +850 |
0 to
880Ω |
0.25 mA |
0.001 |
0.001Ω |
0.01°C |
| Pt500 |
-200 to +850 |
0 to
2200Ω |
0.1mA |
0.001 |
0.001Ω |
0.01°C |
| Pt1000 |
-200 to +850 |
0 to
4400Ω |
0.05 mA |
0.001 |
0.001Ω |
0.01°C |
| Ni100 |
-60 to +850 |
0 to
440Ω |
0.5 mA |
0.001 |
0.001Ω |
0.01°C |
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