Simulplex SMART PHOTOMETER for 2 Sample Points

Probe 2

Probe 1

Simulplex is a special configuration of our popular Optical Solutions' brand ChemView photometer. Simulplex means simultaneous multiplexing. Simulplex is designed to measure:

2 sample streams
All wavelengths measured simultaneously
All outputs transmitted simultaneously
NO-MOVING-PARTS for low maintenance
Same SMART PHOTOMETER technology as ChemView

Notice in this picture that there are two additional optical fibers (in strain relief fittings) at the top of the NEMA 4X enclosure. These go to the second insertion probe or flow cell.

As shown in the schematic below, our patented Simulpex design is a modification of our ChemView layout. We mirror image the lamp, having focusing optics on both sides of the lamp. Light is transmitted in two opposite directions, each to an independent fiber optic insertion probe of flow cell. The light returning from the sample streams enters the linear row of detectors inside ChemView on opposite sides. We divide the detectors into two groups, identified in software as "A" and "B". As in ChemView, the light within each group is divided up among a reference wavelength detector and several analyzing wavelength detectors. We then put a mirror at the position of the last detector for each group, bringing all remaining light into the last detector position for that group. Notice that there are no moving parts and all wavelengths are analyzed simultaneously. The signals are again converted into absorbance. Calibration coefficients are applied to the absorbances to determine chemical concentration. The chemical concentrations are scaled and transmitted via 4-20 mA analog outputs. There are a total of 6 analog outputs possible.

There are a maximum of 6 detectors in Simulplex. Thus, we can divide groups "A" an "B" into the following number of filters/detectors:

2 + 2
3 + 3
4 + 2

For example in the last case, there would be 1 reference wavelength and 3 analyzing wavelengths for group "A", and 1 reference wavelength and 1 analyzing wavelength for group "B".

Specifications

Enclosures	NEMA 4x 304SS Class 1,Div. 1,2, Groups B-D (Z- or X-purge) 304SS ATEX (non-purged) powder-coat Al
Dimensions	NEMA 8x6x10" (wxdxh) (20x15x25cm) 14.5 lbs, 6.6 kg C1D1/2 15x9x16" (wxdxh) (38x21x41cm) 40 lbs, 18.2 kg ATEX 24x20x31.8cm (wxdxh) 18.2 kg
Certifications	C1D1 NFPA 496, 1993, FM compliant CE ATEX II 2 EEx d IIC T6
Purge	Expo-Safety Systems, continuous flow sub-miniPruge (1ZCFSS1S). Intrinsically safe switch closure and pneumatic "winkie" fo purge loss. 1/2" NPTF purge fitting. Purge vent orofice is Size 1 (for 0.4 cfm; 10 L/min). Allow 6 min. purge cycle (min. 4 volumes) prior to power up
Purge Gas	110 p.s.i. clean, dry compressed air or inert gas
Fiber connections	SMA 905 400 - 600 micron (core)
Detectors	Max. 2+2, 3+3, 4+2 for Group "A" + "B" Si for 250-950 nm InGaAs for 900-1650 nm TE-Cooled extended InGaAs for 1000-2150nm
Filters	10 nm FWHM for UV/VIS, 15 nm for NIR typical. 4 OD out-of-band blocking
Light Source	Optical Solutions brand StabLamp, optical feedback circuit, Tungsten-halogen bulb, precision mounting for easy replacement. Approx 8 months bulb life nominal. Pulsed Xe lamp for UV/VIS. Approx 2 year bulb life.
Wavelength Drift	0.1 nm with Si detector 0.2 nm near 1450 nm with InGaAs detector
Photometric Drift	<2 mAU with ±5ºC variation (±2 to 3 mAU with Xe) 0.2 mAU/ºC at 0 AU typical <2 mAU over 2 weeks
Photometric Noise	<1 mAU (3 mAU with Xe source)
Outputs	4 4-20 mA isolated, self-powered. 2 4-20 mAU additionally optional for a total of 6.
Environmental	10 - 40 ºC, 10-90% rel. humidity (non-condensing)
Power	110 - 240 V AC, 50-60 Hz, 70 VA (24 V DC, 2.1 A

Product Brochure

ATEX