3
Temperature/Analog, all inputs isolated
- Measurement Functions -
Universal isolated temperature, voltage and pulse inputs
Universal isolated temperature, voltage and pulse inputs,
Measurement parameters
Voltage
Ranges
100mV f.s.
Range of Measurements Finest Resolution
Universal measurement inputs, voltage, temperature
(thermocouple and Pt inputs*1) and humidity*1,2 can be
selected for each channel. In addition, four input channels
are provided for measuring pulse inputs (totalization/
rotation count) simultaneously with voltage, temperature
and humidity. In addition to channel-to-channel input
isolation, the PC connection interface is completely
isolated from the measurement terminals. Shock hazard
is minimized even when thermocouples and voltage
inputs are measured at the same time.
-100mV to +100mV
-1V to +1V
5 V
μ
1V f.s.
50 V
μ
10V f.s.
-10V to +10V
-60V to +60V
1V to 5V
500 V
μ
100V f.s.
5mV
1 − 5V f.s.
100°C f.s.
500°C f.s.
2000°C f.s.
50,000c f.s.
500,000c f.s.
5Mc f.s.
500 V
μ
-100°C to 100°C
-200°C to 500°C
-200°C to 2000°C
0.01°C
0.1°C
0.5°C
Temperature
Thermocouples: K, E, J, T,
N, W (WRe5-26), R, S, B
0
to 50,000 counts
to 500,000 counts
to 5M counts
1 count
0
10 counts
0
100 counts
2,000 counts
Pulse Accumulation
(Maximum rated voltage above ground is 60 V DC.)
100Mc f.s.
2,500Mc f.s.
5,000/n (r/s) f.s.
100%rh f.s.
0
to 100M counts
1
*
Pt and humidity measurement inputs are supported only by the 8420-51 and
8421-51.
Requires the HUMIDITY SENSOR 9653 (both optional).
0
to 2,500M counts
50,000 counts
1
1
1
2
*
*
*
0 to 5,000/n (r/s)
1/n (r/s)
*
Rotation
Humidity
5.0 to 95.0%rh
0.1%rh
*1 n = pulses per rotation (1 to 1,000)
Sample multiple channels at high speeds
All input channels are quickly scanned, measured and stored within 100 ms (200 ms or more with channels 17 to 32 in Model
, and within
8422-51
about 5 seconds for mixed humidity measurements). As stand-alone instruments, Model 8420-51 provides 4 pulse input channels, plus 8 temperature/
voltage channels, Model 8421-51 provides 4 pulse input channels, plus 16 temperature/voltage channels, and Model 8422-51 provides 4 pulse input
channels, plus 32 temperature/voltage channels. The 32MB of internal memory records about 16.77 million data points.
Real-Time Save to High-Capacity Memory Card
Measurement data can be automatically saved to a PC
Card. Binary (real-time) and text (post-measurement)
formats can be selected. High-capacity Flash ATA
cards up to 1GB can be used for continuous long-term
recording. Choose binary in normal use.This recording
method is linked to writing measurements in real time.
The supplied Wv Wave Viewer software can convert
the data into text format on a PC.
Recording
intervals
64MB
64MB
64MB
64MB
64MB
(using 1 channel)
(using 4 channels)
(using 8 channels)
(using 16 channels) (using 32 channels)
100ms
200ms
500ms
1s
36 days
72 days
9 days 4 days, 12 hours
18 days days
45 days 22 days, 12 hours
2 days, 6 hours
4 days, 12 hours
11 days, 6 hours
- NA -
9
2 days, 6 hours
5 days, 15 hours
11 days, 6 hours
180 days
360 days
90 days
180 days
45 days 22 days, 12 hours
90 days
225 days 112 days, 12 hours 56 days, 6 hours
2s
1 year, 355 days
4 years, 340 days
45 days 22 days, 12 hours
5s
1 year, 85 days
10s
9 years, 315 days 2 years, 170 days
1 year, 85 days
225 days
1 year, 85 days
1 year, 310 days
112 days, 12 hours
225 days
20s
- omitted -
- omitted -
- omitted -
- omitted -
- omitted -
4 years, 340 days 2 years, 170 days
7 years, 145 days 3 years, 255 days
30s
1 year, 85 days
1 year, 310 days
1min
2min
5min to 1hour
- omitted -
- omitted -
- omitted -
7 years, 145 days 3 years, 255 days
- omitted -
- omitted -
7 years, 145 days 3 years, 255 days
- omitted - - omitted -
Real-Time Storage Recording Times with 64 MB Card (approximate times)
Note: Recording times are calculated values, and cannot be guaranteed. For calculations, one year = 365 days.
Calculated values resulting in extremely long periods are omitted.
What happens if a power failure occurs while measuring ?
We recommend using the real-time saving function of the MEMORY HiLOGGERs 8420-51, 8421-51 and
8422-51 with a PC Card. This exclusive technology has been developed to preserve data as reliably as possible
even in the event of a power failure by incorporating PC card technology with the know-how built into the
MEMORY HiCORDER series recording instruments. When recording only to internal memory without using a
card, stored data is retainedforabout tenminutes inthe event ofa powerfailure.
Color LCD displayswaveformsandnumericalvaluessimultaneously, andallowsviewingearlierdatawhilemeasuring
Scroll through the displayed graph while saving
measurements in real time to PC Card to verify earlier
measurements. You can also read the values at the
movable cursors.
Display of Earlier Waveforms
Display of Current Measurements
(The green bar at the bottom indicates (The green bar at the bottom indicates
the relative location of the current the relative location of the current
display in internal memory.)
display in internal memory.)
Standard Measurement Screen
(Measured values appear numerically at the
left, and plotted as a graph at the right together
with the measured values at the cursors.)
ASM-SENSOR [ ASM GMBH ]
