Michell Instruments S503 Specifications
Humidity and Dew-Point Instruments
Calibration
S503
Relative Humidity Generator for Calibrations
The S503 Humidity Generator enables users of humidity
sensors, transmitters and portable devices to quickly and
accurately generate a stable humidity in a test chamber to
validate or calibrate sensors.
Highlights
Generates humidity levels between 10–90% RH•
Highly portable•
Fast stabilization of chamber humidity•
Independent reference hygrometer – optional•
Multiple sensors can be calibrated at the same time•
Technical Specifi cations
Humidity
Generation range 10–90% RH in steps of 0.1% RH
Accuracy ±2% RH or better (5–95% RH)
Stability chamber Better than ±0.5%
Stabilization time to set point <10 minutes
Temperature
Temperature accuracy ±0.3°C (±0.54°F) - internal reference
Operating temperature
(ambient)
Sensor under Calibration
Voltage read out 0–1, 0–5, 0–10 V
Current read out 4–20 mA
Voltage supply 15 V DC, ±10% at 30 mA max
General
Probe ports 7 off – sensor body diameters 5 to 25mm
Desiccant chamber 25g (0.88oz) capacity
Saturation chamber 25ml capacity, distilled water
Display 3½ digit LCD, 13mm (0.5”) characters
Supply 12 V DC (100 - 240 V AC adapter
Weight 1.85kg (
+15 to +35°C (+59 to +95°F)
(0.2 to 0.98”) accommodated by port
adapters
included)
4.08lb)
Dimensions
Issue No: S503_97199_V2_UK_1110
Notes:
Hole A = Drain hole with cap
Hole B = Power hole for adapter
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Please note: Michell Instruments adopts a continuous development program which sometimes
necessitates specifi cation changes without notice. Please contact us for latest version.
www.michell.com
Accessories and Spare Parts
0.25kg (0.55lbs) desiccant (orange) A000171
ø18.5mm (0.73") molded polymer port adpt (for ø8mm (0.31") probes) A000180
ø18.5mm (0.73") molded polymer port adpt (for ø12mm (0.47") probes) A000190
ø18.5mm (0.73") blind stop A000200
Carrying case for the S503 A000230
Water bottle A000242
Tool for changing the port adapters A000265
SS port adapter for Optidew A000272
Polymer port adpt ø18.5mm (0.73") to ø3mm (0.19") (for Optidew
probe)
Blind stop for Optidew adapter A000277
Blind stop for PRT adapter A000278
Al adapter & blind stop (to be modifi ed by customer) (M30x1) A000280
Al port adapter ø client specifi c & blind stop (M30x1) A000280X
Al port adpt for ø12mm (0.47") probe, blind stop (M30x1) A000281
Al port adpt for ø13.5mm (0.53") probe, blind stop (M30x1) A000282
Al port adpt for ø14mm (0.55") probe, blind stop (M30x1) A000283
Al port adpt for ø15mm (0.59") probe, blind stop (M30x1) A000284
Al port adpt for ø18.5mm (0.73") probe, blind stop (M30x1) A000285
Al port adpt for ø19mm (0.75") probe, blind stop (M30x1) A000286
Al port adpt for ø24mm (0.95") probe, blind stop (M30x1) A000287
Al port adpt for ø25mm (0.98") probe, blind stop (M30x1) A000288
Optidew Vision reference hygrometer with sensor OPT-V-01
Control sensor HT757T00
A000273
Humidity and Dew-Point Instruments
Calibration
S503
S503 calibration set
S503-DIG-LC
Ordering Codes
To construct the order code, select the relevant feature from the tables below, starting with the base model, which is {Feature A} and then add on options to create a
string: {Feature A}+{Feature B}+{Feature C}+{Feature D}
Order example:
Relative Humidity Generator for Calibrations
Type {Feature A}
Base unit - S503, including 7 user-specifi ed port
adapters, power adapter, desiccant and adapter tool
Base unit - S503-DIG with extended chamber (0.54
liter extra)
Base unit -Calibration kit with Optidew adapters
- S503, with 5 user-specifi ed port adapters, 2
Optidew adapters (A000272 and A000273), power
adapter, desiccant and adapter tool
Base unit -Calibration kit - S503, including hand
meter and probe (with calibration certifi cate),
7 user-specifi ed port adapters, power adapter,
desiccant, distilled water bottle (water not
included), adapter tool and carrying case
Adapter {Feature B}
Port adapter 12mm (0.47") 12
Port adapter 13.5mm (0.53") 13.5
Port adapter 14mm (0.55") 14
Port adapter 15mm (0.59") 15
Port adapter 18.5mm (0.73") 18.5
Port adapter 19mm (0.75") 19
Port adapter 24mm (0.94") 24
Port adapter 25mm (0.98") 25
S503-DIG+14+AUS+C
S503-DIG
S503-DIG-LC
S503-DIG-OPT
S503-DIG-SET
S503-DIG 14 AUS C
Display {Feature D}
Display in deg C C
Display in deg F F
Power {Feature C}
Australian power supply AUS
European power supply EUR
North American power supply NA
UK power supply UK
© Michell Instruments 2009-2011
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