Ametek JOFRA PTC-425 Dry Block Calibrator

Temperature
Temperature Range
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 to 425°C / 91 to 797°F
Accuracy
*PTC-425 with int. ref. sensor @ 33 to 350°C . ±0.20°C /±0.36°F
*PTC-425 with int. ref. sensor @ 350 to 425°C ±0.25°C /±0.45°F
PTC-425 with external STS-150 ref. sensor . . . ±0.13°C /±0.23°F
*Specification when using the internal reference. (Load 4 mm OD reference
probe in the center of the insert)
12-month period. Relative to reference standard. Specifications by use of the
external STS-150 reference sensor.
Stability
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.02°C / ±0.036°F
Measured after the stability indicator has been on for 10 minutes.
Measuring time is 30 minutes.
Radial Homogeneity (difference between holes)
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.02°C / 0.036°F
Settings
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 or 0.1 or 0.01
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . °C or °F or K
Heating Time
PTC-425. . . . . . . . . . . . . .33 to 425°C / 91 to 797°F . . .10 minutes
All specifications are given with an ambient temperature 23° C/73.4° F
± 3° C/5.9° F. Specified at 115 V/230 V.
Cooling Time
PTC-425. . . . . . . . . . . 425 to 100°C / 797 to 212°F . . .25 minutes
PTC-425. . . . . . . . . . . . 100 to 50°C / 212 to 122°F . . .16 minutes
Time to Stability (typical)
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 minutes

Mains Power
Voltage . . . . . . . . . . . . . . . . . . . . . 115 V (90-127) / 230 V (180-254)
Max Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1150 VA
Frequency, US deliveries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Hz ±3
Frequency, non US deliveries . . . . . . . . . . . . . . .50 Hz ±3, 60 Hz ±3

Physical Specifications
Dimension L x W x H . . . . .362x171x363 mm / 14.3x6.7x14.3 in
Weight
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 kg / 20.3 lb
Immersion Depth
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150 mm / 5.91 in
Well Diameter
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 mm / 1.02 in
Insert Dimensions (diameter x length)
PTC-425. . . . . . . . . . . . . . . . . . . . . . . . . 25,8 x 155 mm / 1.02 x 6.1 in

Electrical
Switch Input (dry contact)
Test Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maximum 5 VDC
Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maximum 2.5 mA
Digital Interface
USB 2.0

Environmental
Operating Temperature
0 to 40°C / 32 to 104°F
Storage Temperature
-20 to 50°C / -4 to 122°F
Humidity
0 to 90% Rh, non-condensing
Protection Class
IP-10

External Reference Sensor
STS-150-A . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 660°C / 32 to 1220°F
Accuracy
Hysteresis (@ 0°C / 32°F) . . . . . . . . . . . . . . . . . . . . . .0.01°C / 0.018°F
Long Term Stability (@ 0°C / 32°F) . . . . . . . . . . . 0.014°C / 0.025°F
Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.004°C/ 0.007°F
Note: Stability when exposed to max. temperature for 100 hours
Sensing Element
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pt100
Response Time
STS-150-A : t0.5 (50%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 sec.
STS-150-A: t0.9 (90%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 sec.
Note: Liquid in motion, 0.4 m/sec
Dimensions
Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 mm / 0.157 in
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203 mm / 7.99 in
Max. height over calibrator top . . . . . . . . . . . . . . . . 38 mm / 1.50 in