Brymen BM22s User Manual page 6

Measurement Category:
Models 22s & 27s: CAT II 600V and CAT III 300V
Model 25s & 25a: CAT II 450V and CAT III 300V
E.M.C.: Meets EN61326 (1997, 1998/A1), EN61000- 4-2 (1995), & EN61000-4-3 (1996)
In an RF Field of 3V/m:
Capacitance function is not specified
Other function ranges:
Total accuracy = Specified accuracy + 45d
Performance above 3V/m is not specified
Overload Protection:
Models 22s & 27s: 920VDC & VAC rms
Model 25s & 25a: 855VDC & VAC rms
Low Battery: Below approx. 2.4V
Power Supply: 3V standard button battery x 1 (IEC-CR2032; ANSI-NEDA-5004LC)
Power Consumption (typical):
Model 22s, 25s & 25a: 2mA
Model 27s: 6mA for Voltage functions on Auto-V position, and 2mA for other functions
APO Consumption (typical): 2.2A
APO Timing:
Model 22s: Idle for 30 minutes
Model 25a, 25s & 27s: Idle for 3 minutes
Dimension / Weight: L113mm x W53mm x H10.2mm / Approx. 78 gm
Special Features:
Model 22s: Data Hold, and 30ms MAX Hold
Model 25a, 25s & 27s: AutoCheck
Accessories: Battery installed, and User's manual
Optional Accessories: BH-20R protective holster, and BSC-20 soft carrying pouch
Electrical Specification
Accuracy is given as +/- (% of reading digits + number of digits) or otherwise specified @ 23
than 75% R.H.
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DC Voltage (Models 25a,
RANGE
6.000V
60.00V
450.0V
1)
600.0V
2)
600.0V
3)
BM25 Input Impedance:
AutoCheck Lo-Z DCV: 160k, 160pF nominal
TM
BM27 Input Impedance:
AutoCheck Lo-Z DCV: 833k (4.2k when
TM
displaying "Auto"), 90pF nominal
Hi-Z DCV: 5M, 90pF nominal
NMRR: > 30dB @ 50Hz/60Hz
CMRR: > 100dB @ DC, 50Hz/60Hz; Rs=1k
(Automatic V &  Selection), and EF-Detection
TM
25s & 27s)
Accuracy
0.5%+3d
1.0%+5d
1.2%+5d
2.0%+5d
1.5%+5d
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DCV AutoCheck
TM
> +1.2VDC or < -0.6VDC nominal
BM25 AutoCheck
1)
BM27 AutoCheck
2)
BM27 Hi-Z DCV only
3)
DC Voltage (Model
RANGE
400.0mV
4.000V, 40.00V, 400.0V
600V
NMRR: > 50dB @ 50Hz/60Hz
CMRR: > 120dB @ DC, 50Hz/60Hz; Rs=1k
Input Impedance: 10 M, 30pF nominal; (1000M
for 400.0mV range)
C +/- 5
o o
Threshold:
DCV only
TM
DCV only
TM
22s)
Accuracy
6
C and less
1.0%+2d
2.0%+2d
2.5%+4d