bench-top turbidity meter | HD25.2

1.358,00 EUR

inkl. 19 % USt -> Preis zzgl. Versandkosten

Lieferzeit bzw. Fertigungszeit variiert - bitte erfragen!

Art.Nr.: HD25.2

Produktbeschreibung

general information:

The HD25.2 is a digital turbidity meter for laboratory and mobile use, suitable for measurements in drinking water, waste water and process liquids. The working principle is based on the nephelometric (90° scattered light sensor) method.

It is equipped with three light detectors and two LED light sources (white and infrared) which are permanently kept under control in order to guarantee long-term stability. The instrument performs measurements according to the standards EPA 180.1, ISO-NEPH (ISO 7027), EBC and ASBC. It is also able to carry out measures of transmission factor percentage of white and infrared light.

The initial factory calibration is based on Formazin primary standard. For routine calibration a set of stabilized secondary standard solutions is available: STCAL (turbidity standards for calibration):

STCAL 1 less than 0,05 NTU
STCAL 2 equal to 8 NTU
STCAL 3 equal to 80 NTU
STCAL 4 equal to 800 NTU

User calibration is automatic on one or four points, depending on the measuring variable. Stabilized power supply and advanced electronics guarantee optimal performances over time. The HD25.2 is a datalogger that stores up to 999 samples. The data can be transferred from the instrument connected to a PC via the RS232C and USB 2.0 serial ports. The RS232C serial port can be used to transfer the acquired measurements to a 24 column printer (i.e. HD40.1).

The print function allows to print labels with progressive and automatically incrementing numeration, with all data related to the sample being examined. The dedicated software DeltaLog11 allows instrument management and data processing on PC.

The use of the HD25.2 by more users is facilitated by the “User Management” function, which allows, according to the case, to enable or disable some advanced functions of the instrument through password. The protection degree is IP66.

specifications:

device
dimensions (lenth x width x height):	220 x 120 x 55 mm
weight:	400g (batteries incl.)
material:	ABS, rubber
LCD display:	4½ characters plus symbols visible area: 52 x 42 mm

Betriebsbedingungen
working temperature:	0°C to +50°C
storage temperature:	-25°C to +65°C
humidity:	0 % to 90 % r.h. without condensation
storing of calibration standards:	+5°C to +25°C (temperature should not exceed, protect from light)

ingress protection:	IP66

power supply
batteries:	3x 1.5 V AA battery
autonomy:	100 hours with 1,800 mAh alkaline batteries
mains:	mains adapter (SWD10) 100 to 240 V AC / 12 V DC – 1 A

measuring method
standard:	EPA180.1, ISO-NEPH (ISO 7027), EBC, ASBC, WHITE %T e IR %T
light source:	LED IR (850 nm) and white LED (470 nm)
receiver:	silicium photodiode
sample cell:	Ø 24 mm - height 68 mm, 20 cc

maesurement of turbidity
method / measuring range:	EPA180.1: (0…1000 NTU) ISO-NEPH: (0…1000 FNU) EBC: (0…250 EBC) ASBC: (0…9999 ASBC) WHITE %T: (0…100 %T) IR %T: (0…100 %T)
resolution:	0.01 NTU: (0…9.99 NTU) 0.1 NTU: (10.0…99.9 NTU) 1 NTU: (100…1000 NTU)
accuracy:	±2 % reading + 0.01 NTU (0…500 NTU) ±3 % reading (500…1000 NTU)
repeatability:	±2 % reading or 0.01 NTU (the major one)

security of memorized data:	unlimited

time
date and time:	real time schedule
accuracy:	1 min/month max. error

storing of measured values
quantity:	999 samples

serial interface RS232C
type:	RS232C electrically isolated
baud rate:	can be set from 1,200 to 38,400 baud
data bit:	8
parity:	none
stop bit:	1
flow control:	Xon/Xoff
serial cable length:	max. 15 m

USB interface
type:	1.1 - 2.0 electrically isolated

connections
serial interface:	DB9 connector (9-pole male)
USB interface:	USB connector type B
mains adapter:	2-pole connector (Ø 5.5 mm – 2.1 mm). Positive at centre.