SPECIFICATION
WIKA Hand-Held Thermometer CTH 6450 page 20
8 Specification
Digital instrument
Sensor connections
2 sensor connections (with Type K thermo-voltage free)
Thermocouples
J, K, N, S, T (as Immersion, Penetration and Surface probe available)
Measuring range
Type K:(NiCr-Ni)
-199.9 ... +999.9°C or -220 ... +1370°C
Type J:(Fe-CuNi)
-120.0 ... +700.0°C or -200 ... +1100°C
Type N:(NiCrSi-NiSi)
-199.9 ... +999.9°C or -200 ... +1300°C
Type S:(Pt10Rh-Pt)
-50.0 ... +999.9°C or -50 ... +1750°C
Type T:(Cu-CuNi)
-120.0 ... +400.0°C or -200 ... +400°C
Accuracy
+/-1digit (at nominal temperature)
Type K:-199,9 ... +999,9°C.+/-0.03%of m.v. +/-0.05%FS (T>-60°C); +/-0.2%of m.v. +/-0.05%FS (T<-60°C)
-220 ... +1370°C +/-0.08%of m.v. +/-0.1%FS (T>-100°C); +/-1°C +/-0,1%FS (T<-100°C)
Type J: -120,0 ... +700,0°C +/-0.03%of m.v. +/-0.08%FS (T>-80°C); +/-0.2%of m.v. +/-0.08%FS (T<-80°C)
-200 ... +1100°C +/-0.08%of m.v. +/-0.1%FS (T>-150°C); +/-1°C +/-0,1%FS (T<-150°C)
Type N:-199,9 ... +999,9°C +/-0.03%of m.v. +/-0.05%FS (T>-60°C); +/-0.2%of m.v. +/-0.05%FS (T<-60°C)
-200 ... +1300°C +/-0.08%of m.v. +/-0.1%FS (T>-100°C); +/-1°C +/-0.1%FS (T<-100°C)
Type S: -50,0 ... +999,9°C +/-0.05%of m.v. +/-0.08%FS (T>-200°C); +/-1°C +/-0.08%FS (T<-200°C)
-50 ... +1750°C +/-0.1%of m.v. +/-0.1%FS (T>-200°C); +/-1°C +/-0.1%FS (T<-200°C)
Type T: -120,0 ... +400,0°C +/-0.03%of m.v. +/-0.1%FS (T>-70°C); +/-0.2%of m.v. +/-0.1%FS (T<-70°C)
-200 ... +400°C +/-1°C (T>-100°C); +/-1°C +/-digit (T<-100°C)
Display
large LCD-display to show two 4-digit values and extra-info
Range
of display max. -1999 to 9999 digit, depending on sensors used
Units
°C, °F
Resolution
0.1K or 1K respectively
Temperature drift
0.01%/K
Point of comparison
+/- 0.3K
Nominal temperature
20°C
Working temperature
0 to +50°C
Relative humidity
0 to 95% (non-condensing)
Storage temperature
-20 to +70°C
Key-functions
Min, Max, Hold, Tara(Zero-correction by diff.-measurement)
Power-off function
Device will be automatically switched off if no key is pressed/no interface communication
takes place for the time of the power-off delay. The power-off delay can be set to values
between 1 and 120 min.; it can also be completely de-activated.
Min/max alarm
The measuring value is constantly monitored for the min. and max. limits set. Alarm is
given by integrated horn, display and interface.
Data logger
2 functions: individual value logger (Store) and cyclic logger (Cycle)
Memory space
Store: 99; Cycle: 5400
Cycle time
1 to 3600 seconds
Real time clock
integrated clock with date and year
Power supply
9V battery, type IEC 6F22 (included in scope of delivery) as well as additional power
supply pin jack (1.9 mm inside diameter) for external stabilised 10.5 - 12V direct-current
voltage (see accessories for suitable power supply)
Charging rate
approx. 3.0 mA
Change battery
signal warning sign and `bAt`
Interface
serial interface. Connection to RS232-interface via suitable electrically insulated
interface
Housing
(digital instrument) impact-resistant ABS, membrane keyboard, transparent panel
Ingress protection
IP 65 (front)
Dimensions
142 x 71 x 26 mm (L x W x D)
EMC / CE-conformity
The CTH 6450 device corresponds to the essential protection ratings established in the
regulations of the Council for the Approximation of Legislation of the member countries
regarding electromagnetic compatibility (89/336/EWG)
Sensors
Probes available
Immersion, Penetration and Surface probe
Accuracy
class 1for thermocouples acc. to EN 60584
Temperature range
- Immersion probe
-200 ... +1150°C
- Penetration probe
-65 ... +1000°C
- Surface probe
-65 ... +500°C
Material wetted parts
Immersion probe: Inconel, Penetration probe: V4A, Surface probe: V4A and Cu-probe-head
Electrical connection
DIN-plug with silicon cabel