HF Scientific DRT 100BR (20052) Digital Turbidity Meter

Used Lab Equipment Warranty Condition: Used Will be thoroughly tested and serviced
6 MONTH IN SHOP WARRANTY
Stock #:
32843
Status:
1 Available In Stock (request a quote)
Dimensions (approx.):
8"W x 10.5"D x 9"H (outside)
Electrical:
115/230 Volts, 50/60 Hz,
Product Description The HF Instruments DRT-100BR turbidimeter measures turbidity, haze and suspended solids on a variety of liquids. The Ratio optics provide linear response from 0-1000 NTU's, eliminating the need for separate calibration checks at each range. Four switch positions cover range from 0-1000 NTU's. Horizontal light path eliminates effects from sample setting.
Resolution: 0.01 (0-10); 0.1 (0-100); 1.0 (0-1000).
Sample size: 25ml.

Ranges:
0 - 1 NTU
0 - 10 NTU
0 - 100 NTU
0 - 1000 NTU
FEATURES INCLUDED WITH THE 20052 RESEARCH MODEL:
A) ADJUSTABLE SET POINT ALARM CONTROL
This feature provides "Dry" contact closure when the measured value exceeds a preset limit. In addition to the dry contact closure, the DRT-100B has a red lamp on the front of the unit that illuminates when the current NTU readings exceed the alarm limit. This limit can be set by placing the three position "ALARM" switch labeled "SET', "OFF", "NORM" to the "SET" position. The potentiometer behind the face plate is then adjusted through a hole in the face plate until the digital display shows the desired value. The "ALARM" switch is then returned to the "NORM" position. At any time, the alarm limit currently set in the instrument may be determined by moving the "ALARM" switch to the "SET" position and reading the digital display.
Three terminals ("NC", "C", "NO") are located on the rear panel and are used to connect the user's alarm circuit. These contacts are rated at 5 amps at 110 VAC, 2.5 amps at 230 VAC. The switch may be set to "OFF" to deactivate these contacts during Standardization or Calibration to prevent false alarms.
B) RECORDER OUTPUT, 0 - 1 MA - This output is obtained through the mini-phone jack marked "0 - 1 mA" on the rear panel of the instrument.
(Mating plug supplied in accessory kit).
C) FLOW-THRU UNIT FOR CONTINUOUS MEASUREMENT
This feature allows the continuous measurement of the turbidity of a process. The cell will accept a maximum pressure of 60 psi, and a maximum flow rate of 1.5 U.S. gpm. The speed of response to a change in process turbidity will, of course, depend on the length of the tubing connecting the measuring head to the process, and therefore this tubing should be kept as short as possible. Should air or gas bubbles be present in the tubing from the process, the Flow Clamp (Part #50004) should be placed on the effluent tubing and adjusted to provide enough back pressure to eliminate all bubbles. The EPA recommends that cuvettes used for instrument calibration, standardization or sample measurement be indexed. For quick indexing of the flow through cuvette a rotational flow through assembly with locking collar has been installed. To index your flow through cuvette, slowly rotate the flow head at least one revolution, while observing the reading and locate the position of lowest reading. Without moving the flow head, press down the flow head and turn the locking collar until the flow through assembly is securely locked in place.
D) ATTENUATION MEASUREMENT
This feature may be used for measurements in excess of 1000 NTU's. Set the "ATTN. - NTU" switch to "ATTEN". The instrument is now in the light attenuation mode and the side detectors are not in the circuit. Relative measurements can now be made. Known samples should be compared to readings on the digital display and a graph drawn that will allow the user to determine process values (e.g., ppm suspended solids) from readings on the digital display.
E) CONTROL OUTPUT, 4 - 20 MA
This feature, which would be used in conjunction with the "Flow-Through Unit" feature (Part #50028) provides a control output that varies with changing measured values of a continuous process. The control output is obtained through the mini-phone jack marked "4 - 20 mA" on the rear panel of the instrument. Low and high adjustments for setting desired actuation of the control element for other ranges are located behind the access cover on the front of the instrument.
Cuvette (sample container) and standard are not included.